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Computing

Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorithmic processes, and the development of both hardware and software. Computing has scientific, engineering, mathematical, technological, and social aspects. Major computing disciplines include computer engineering, computer science, cybersecurity, data science, information systems, information technology, and software engineering.

The term computing is also synonymous with counting and calculating. In earlier times, it was used in reference to the action performed by mechanical computing machines, and before that, to human computers.

History
The history of computing is longer than the history of computing hardware and includes the history of methods intended for pen and paper (or for chalk and slate) with or without the aid of tables. Computing is intimately tied to the representation of numbers, though mathematical concepts necessary for computing existed before numeral systems. The earliest known tool for use in computation is the abacus, and it is thought to have been invented in Babylon circa between 2700 and 2300 BC. Abaci, of a more modern design, are still used as calculation tools today.

The first recorded proposal for using digital electronics in computing was the 1931 paper "The Use of Thyratrons for High Speed Automatic Counting of Physical Phenomena" by C. E. Wynn-Williams. Claude Shannon's 1938 paper "A Symbolic Analysis of Relay and Switching Circuits" then introduced the idea of using electronics for Boolean algebraic operations.

The concept of a field-effect transistor was proposed by Julius Edgar Lilienfeld in 1925. John Bardeen and Walter Brattain, while working under William Shockley at Bell Labs, built the first working transistor, the point-contact transistor, in 1947. In 1953, the University of Manchester built the first transistorized computer, the Manchester Baby. However, early junction transistors were relatively bulky devices that were difficult to mass-produce, which limited them to a number of specialised applications. The metal–oxide–silicon field-effect transistor (MOSFET, or MOS transistor) was invented by Mohamed Atalla and Dawon Kahng at Bell Labs in 1959. The MOSFET made it possible to build high-density integrated circuits, leading to what is known as the computer revolution or microcomputer revolution.

Computer
A computer is a machine that manipulates data according to a set of instructions called a computer program. The program has an executable form that the computer can use directly to execute the instructions. The same program in its human-readable source code form, enables a programmer to study and develop a sequence of steps known as an algorithm. Because the instructions can be carried out in different types of computers, a single set of source instructions converts to machine instructions according to the CPU type.

The execution process carries out the instructions in a computer program. Instructions express the computations performed by the computer. They trigger sequences of simple actions on the executing machine. Those actions produce effects according to the semantics of the instructions.

Computer hardware
Computer hardware includes the physical parts of a computer, including the central processing unit, memory, and input/output. Computational logic and computer architecture are key topics in the field of computer hardware.

Computer software
Computer software, or just software, is a collection of computer programs and related data, which provides instructions to a computer. Software refers to one or more computer programs and data held in the storage of the computer. It is a set of programs, procedures, algorithms, as well as its documentation concerned with the operation of a data processing system. Program software performs the function of the program it implements, either by directly providing instructions to the computer hardware or by serving as input to another piece of software. The term was coined to contrast with the old term hardware (meaning physical devices). In contrast to hardware, software is intangible.

Software is also sometimes used in a more narrow sense, meaning application software only.

System software
System software, or systems software, is computer software designed to operate and control computer hardware, and to provide a platform for running application software. System software includes operating systems, utility software, device drivers, window systems, and firmware. Frequently used development tools such as compilers, linkers, and debuggers are classified as system software. System software and middleware manage and integrate a computer's capabilities, but typically do not directly apply them in the performance of tasks that benefit the user, unlike application software.

Application software
Application software, also known as an application or an app, is computer software designed to help the user perform specific tasks. Examples include enterprise software, accounting software, office suites, graphics software, and media players. Many application programs deal principally with documents. Apps may be bundled with the computer and its system software, or may be published separately. Some users are satisfied with the bundled apps and need never install additional applications. The system software manages the hardware and serves the application, which in turn serves the user.

Application software applies the power of a particular computing platform or system software to a particular purpose. Some apps, such as Microsoft Office, are developed in multiple versions for several different platforms; others have narrower requirements and are generally referred to by the platform they run on. For example, a geography application for Windows or an Android application for education or Linux gaming. Applications that run only on one platform and increase the desirability of that platform due to the popularity of the application, known as killer applications.

Computer network
A computer network, often simply referred to as a network, is a collection of hardware components and computers interconnected by communication channels that allow the sharing of resources and information. When at least one process in one device is able to send or receive data to or from at least one process residing in a remote device, the two devices are said to be in a network. Networks may be classified according to a wide variety of characteristics such as the medium used to transport the data, communications protocol used, scale, topology, and organizational scope.

Communications protocols define the rules and data formats for exchanging information in a computer network, and provide the basis for network programming. One well-known communications protocol is Ethernet, a hardware and link layer standard that is ubiquitous in local area networks. Another common protocol is the Internet Protocol Suite, which defines a set of protocols for internetworking, i.e. for data communication between multiple networks, host-to-host data transfer, and application-specific data transmission formats.

Computer networking is sometimes considered a sub-discipline of electrical engineering, telecommunications, computer science, information technology, or computer engineering, since it relies upon the theoretical and practical application of these disciplines.

Internet
The Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite (TCP/IP) to serve billions of users. This includes millions of private, public, academic, business, and government networks, ranging in scope from local to global. These networks are linked by a broad array of electronic, wireless, and optical networking technologies. The Internet carries an extensive range of information resources and services, such as the inter-linked hypertext documents of the World Wide Web and the infrastructure to support email.

Computer programming
Computer programming is the process of writing, testing, debugging, and maintaining the source code and documentation of computer programs. This source code is written in a programming language, which is an artificial language that is often more restrictive than natural languages, but easily translated by the computer. Programming is used to invoke some desired behavior (customization) from the machine.

Writing high-quality source code requires knowledge of both the computer science domain and the domain in which the application will be used. The highest-quality software is thus often developed by a team of domain experts, each a specialist in some area of development. However, the term programmer may apply to a range of program quality, from hacker to open source contributor to professional. It is also possible for a single programmer to do most or all of the computer programming needed to generate the proof of concept to launch a new killer application.

Computer programmer
A programmer, computer programmer, or coder is a person who writes computer software. The term computer programmer can refer to a specialist in one area of computer programming or to a generalist who writes code for many kinds of software. One who practices or professes a formal approach to programming may also be known as a programmer analyst. A programmer's primary computer language (C, C++, Java, Lisp, Python, etc.) is often prefixed to the above titles, and those who work in a web environment often prefix their titles with Web. The term programmer can be used to refer to a software developer, software engineer, computer scientist, or software analyst. However, members of these professions typically possess other software engineering skills, beyond programming.

Computer industry
The computer industry is made up of businesses involved in developing computer software, designing computer hardware and computer networking infrastructures, manufacturing computer components, and providing information technology services, including system administration and maintenance.

The software industry includes businesses engaged in development, maintenance, and publication of software. The industry also includes software services, such as training, documentation, and consulting.

Computer engineering
Computer engineering is a discipline that integrates several fields of electrical engineering and computer science required to develop computer hardware and software. Computer engineers usually have training in electronic engineering (or electrical engineering), software design, and hardware-software integration, rather than just software engineering or electronic engineering. Computer engineers are involved in many hardware and software aspects of computing, from the design of individual microprocessors, personal computers, and supercomputers, to circuit design. This field of engineering includes not only the design of hardware within its own domain, but also the interactions between hardware and the context in which it operates.

Software engineering
Software engineering is the application of a systematic, disciplined, and quantifiable approach to the design, development, operation, and maintenance of software, and the study of these approaches. That is, the application of engineering to software. It is the act of using insights to conceive, model and scale a solution to a problem. The first reference to the term is the 1968 NATO Software Engineering Conference, and was intended to provoke thought regarding the perceived software crisis at the time. Software development, a widely used and more generic term, does not necessarily subsume the engineering paradigm. The generally accepted concepts of Software Engineering as an engineering discipline have been specified in the Guide to the Software Engineering Body of Knowledge (SWEBOK). The SWEBOK has become an internationally accepted standard in ISO/IEC TR 19759:2015.

Computer science
Computer science or computing science (abbreviated CS or Comp Sci) is the scientific and practical approach to computation and its applications. A computer scientist specializes in the theory of computation and the design of computational systems.

Its subfields can be divided into practical techniques for its implementation and application in computer systems, and purely theoretical areas. Some, such as computational complexity theory, which studies fundamental properties of computational problems, are highly abstract, while others, such as computer graphics, emphasize real-world applications. Others focus on the challenges in implementing computations. For example, programming language theory studies approaches to the description of computations, while the study of computer programming investigates the use of programming languages and complex systems. The field of human–computer interaction focuses on the challenges in making computers and computations useful, usable, and universally accessible to humans.

Cybersecurity
The field of cybersecurity pertains to the protection of computer systems and networks. This includes information and data privacy, preventing disruption of IT services and prevention of theft of and damage to hardware, software, and data.

Data science
Data science is a field that uses scientific and computing tools to extract information and insights from data, driven by the increasing volume and availability of data. Data mining, big data, statistics, machine learning and deep learning are all interwoven with data science.

Information systems
Information systems (IS) is the study of complementary networks of hardware and software (see information technology) that people and organizations use to collect, filter, process, create, and distribute data. The ACM's Computing Careers describes IS as: "'A majority of IS [degree] programs are located in business schools; however, they may have different names such as management information systems, computer information systems, or business information systems. All IS degrees combine business and computing topics, but the emphasis between technical and organizational issues varies among programs. For example, programs differ substantially in the amount of programming required.'"

The study of IS bridges business and computer science, using the theoretical foundations of information and computation to study various business models and related algorithmic processes within a computer science discipline. The field of Computer Information Systems (CIS) studies computers and algorithmic processes, including their principles, their software and hardware designs, their applications, and their impact on society while IS emphasizes functionality over design.

Information technology
Information technology (IT) is the application of computers and telecommunications equipment to store, retrieve, transmit, and manipulate data, often in the context of a business or other enterprise. The term is commonly used as a synonym for computers and computer networks, but also encompasses other information distribution technologies such as television and telephones. Several industries are associated with information technology, including computer hardware, software, electronics, semiconductors, internet, telecom equipment, e-commerce, and computer services.

Research and emerging technologies
DNA-based computing and quantum computing are areas of active research for both computing hardware and software, such as the development of quantum algorithms. Potential infrastructure for future technologies includes DNA origami on photolithography and quantum antennae for transferring information between ion traps. By 2011, researchers had entangled 14 qubits. Fast digital circuits, including those based on Josephson junctions and rapid single flux quantum technology, are becoming more nearly realizable with the discovery of nanoscale superconductors.

Fiber-optic and photonic (optical) devices, which already have been used to transport data over long distances, are starting to be used by data centers, along with CPU and semiconductor memory components. This allows the separation of RAM from CPU by optical interconnects. IBM has created an integrated circuit with both electronic and optical information processing in one chip. This is denoted CMOS-integrated nanophotonics (CINP). One benefit of optical interconnects is that motherboards, which formerly required a certain kind of system on a chip (SoC), can now move formerly dedicated memory and network controllers off the motherboards, spreading the controllers out onto the rack. This allows standardization of backplane interconnects and motherboards for multiple types of SoCs, which allows more timely upgrades of CPUs.

Another field of research is spintronics. Spintronics can provide computing power and storage, without heat buildup. Some research is being done on hybrid chips, which combine photonics and spintronics. There is also research ongoing on combining plasmonics, photonics, and electronics.

Cloud computing
Cloud computing is a model that allows for the use of computing resources, such as servers or applications, without the need for interaction between the owner of these resources and the end user. It is typically offered as a service, making it an example of Software as a Service, Platforms as a Service, and Infrastructure as a Service, depending on the functionality offered. Key characteristics include on-demand access, broad network access, and the capability of rapid scaling. It allows individual users or small business to benefit from economies of scale.

One area of interest in this field is its potential to support energy efficiency. Allowing thousands of instances of computation to occur on one single machine instead of thousands of individual machines could help save energy. It could also ease the transition to renewable energy source, since it would suffice to power one server farm with renewable energy, rather than millions of homes and offices.

However, this centralized computing model poses several challenges, especially in security and privacy. Current legislation does not sufficiently protect users from companies mishandling their data on company servers. This suggests potential for further legislative regulations on cloud computing and tech companies.

Quantum computing
Quantum computing is an area of research that brings together the disciplines of computer science, information theory, and quantum physics. While the idea of information as part of physics is relatively new, there appears to be a strong tie between information theory and quantum mechanics. Whereas traditional computing operates on a binary system of ones and zeros, quantum computing uses qubits. Qubits are capable of being in a superposition, i.e. in both states of one and zero, simultaneously. Thus, the value of the qubit is not between 1 and 0, but changes depending on when it is measured. This trait of qubits is known as quantum entanglement, and is the core idea of quantum computing that allows quantum computers to do large scale computations. Quantum computing is often used for scientific research in cases where traditional computers do not have the computing power to do the necessary calculations, such in molecular modeling. Large molecules and their reactions are far too complex for traditional computers to calculate, but the computational power of quantum computers could provide a tool to perform such calculations.

license: Creative Commons - Attribution Share-Alike - https://creativecommons.org/licenses/by-sa/4.0/

title: Computing


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Casino

A casino is a facility for certain types of gambling. Casinos are often built near or combined with hotels, resorts, restaurants, retail shops, cruise ships, and other tourist attractions. Some casinos are also known for hosting live entertainment, such as stand-up comedy, concerts, and sports.

Etymology and usage
Casino is of Italian origin; the root casa means a house. The term casino may mean a small country villa, summerhouse, or social club. During the 19th century, casino came to include other public buildings where pleasurable activities took place; such edifices were usually built on the grounds of a larger Italian villa or palazzo, and were used to host civic town functions, including dancing, gambling, music listening, and sports. Examples in Italy include Villa Farnese and Villa Giulia, and in the US the Newport Casino in Newport, Rhode Island. In modern-day Italian, a is a brothel (also called casa chiusa, literally "closed house"), a mess (confusing situation), or a noisy environment; a gaming house is spelt, with an accent.

Not all casinos are used for gaming. The Catalina Casino, on Santa Catalina Island, California, has never been used for traditional games of chance, which were already outlawed in California by the time it was built. The Copenhagen Casino was a Danish theatre which also held public meetings during the 1848 Revolution, which made Denmark a constitutional monarchy.

In military and non-military usage, a (Spanish) or  (German) is an officers' mess.

History of gambling houses
The precise origin of gambling is unknown. It is generally believed that gambling in some form or another has been seen in almost every society in history. From Ancient Mesopotamia, Greeks and Romans to Napoleon's France and Elizabethan England, much of history is filled with stories of entertainment based on games of chance.

The first known European gambling house, not called a casino although meeting the modern definition, was the Ridotto, established in Venice, Italy, in 1638 by the Great Council of Venice to provide controlled gambling during the carnival season. It was closed in 1774 as the city government felt it was impoverishing the local gentry.

In American history, early gambling establishments were known as saloons. The creation and importance of saloons was greatly influenced by four major cities: New Orleans, St. Louis, Chicago and San Francisco. It was in the saloons that travelers could find people to talk to, drink with, and often gamble with. During the early 20th century in the US, gambling was outlawed by state legislation. However, in 1931, gambling was legalized throughout the state of Nevada, where the US's first legalized casinos were set up. In 1976 New Jersey allowed gambling in Atlantic City, now the US's second largest gambling city.

Gambling in casinos
Most jurisdictions worldwide have a minimum gambling age of 18 to 21.

Customers gamble by playing games of chance, in some cases with an element of skill, such as craps, roulette, baccarat, blackjack, and video poker. Most games have mathematically determined odds that ensure the house has at all times an advantage over the players. This can be expressed more precisely by the notion of expected value, which is uniformly negative (from the player's perspective). This advantage is called the house edge. In games such as poker where players play against each other, the house takes a commission called the rake. Casinos sometimes give out complimentary items or comps to gamblers.

Payout is the percentage of funds ("winnings") returned to players.

Casinos in the United States say that a player staking money won from the casino is "playing with the house's money".

Video lottery machines (slot machines) have become one of the most popular forms of gambling in casinos. investigative reports have started calling into question whether the modern-day slot-machine is addictive.

Design
Factors influencing gambling tendencies include sound, odour and lighting. Natasha Dow Schüll, an anthropologist at the Massachusetts Institute of Technology, highlights the decision of the audio directors at Silicon Gaming to make its slot machines resonate in "the universally pleasant tone of C, sampling existing casino soundscapes to create a sound that would please but not clash".

Alan Hirsch, founder of the Smell & Taste Treatment and Research Foundation in Chicago, studied the impact of certain scents on gamblers, discerning that a pleasant albeit unidentifiable odor released by Las Vegas slot machines generated about 50% more in daily revenue. He suggested that the scent acted as an aphrodisiac, causing a more aggressive form of gambling.

Markets
The following lists major casino markets in the world with casino revenue of over US$1 billion as published in PricewaterhouseCoopers's report on the outlook for the global casino market:

By company
According to Bloomberg, accumulated revenue of the biggest casino operator companies worldwide amounted to almost US$55 billion in 2011. SJM Holdings Ltd. was the leading company in this field, earning $9.7 bn in 2011, followed by Las Vegas Sands Corp. at $7.4 bn. The third-biggest casino operator company (based on revenue) was Caesars Entertainment, with revenue of US$6.2 bn.

Significant sites
While there are casinos in many places, a few places have become well known specifically for gambling. Perhaps the place almost defined by its casino is Monte Carlo, but other places are known as gambling centers.

Monte Carlo, Monaco
Monte Carlo Casino, located in Monte Carlo city, in Monaco, is a casino and a tourist attraction.

Monte Carlo Casino has been depicted in many books, including Ben Mezrich's Busting Vegas, where a group of Massachusetts Institute of Technology students beat the casino out of nearly $1 million. This book is based on real people and events; however, many of those events are contested by main character Semyon Dukach. Monte Carlo Casino has also been featured in multiple James Bond novels and films.

The casino is mentioned in the song "The Man Who Broke the Bank at Monte Carlo" as well as the film of the same name.

Campione d'Italia
Casinò di Campione is located in the tiny Italian enclave of Campione d'Italia, within Ticino, Switzerland. The casino was founded in 1917 as a site to gather information from foreign diplomats during the First World War. Today it is owned by the Italian government, and operated by the municipality. With gambling laws being less strict than in Italy and Switzerland, it is among the most popular gambling destination besides Monte Carlo. The income from the casino is sufficient for the operation of Campione without the imposition of taxes, or obtaining of other revenue. In 2007, the casino moved into new premises of more than 55000 m2, making it the largest casino in Europe. The new casino was built alongside the old one, which dated from 1933 and has since been demolished.

Malta
The archipelago of Malta is a particularly famous place for casinos, standing out mainly with the historic casino located at the princely residence of Dragonara. Dragonara Palace was built in 1870. Its name comes from the Dragonara Point, the peninsula where it is built. On 15 July 1964, the palace opened as a casino.

Macau
The former Portuguese colony of Macau, a special administrative region of the People's Republic of China since 1999, is a popular destination for visitors who wish to gamble. This started in Portuguese times, when Macau was popular with visitors from nearby Hong Kong, where gambling was more closely regulated. The Venetian Macao is currently the largest casino in the world. Macau also surpassed Las Vegas as the largest gambling market in the world.

Germany
Machine-based gaming is only permitted in land-based casinos, restaurants, bars and gaming halls, and only subject to a licence. Online slots are, at the moment, only permitted if they are operated under a Schleswig-Holstein licence. AWPs are governed by federal law – the Trade Regulation Act and the Gaming Ordinance.

Portugal
The Casino Estoril, located in the municipality of Cascais, on the Portuguese Riviera, near Lisbon, is the largest casino in Europe by capacity.

During the World War II, it was reputed to be a gathering point for spies, dispossessed royals, and wartime adventurers; it became an inspiration for Ian Fleming's James Bond 007 novel Casino Royale.

Russia
There are four legal gaming zones in Russia: "Siberian Coin" (Altay), "Yantarnaya" (Kaliningrad region), "Azov-city" (Rostov region) and "Primorie" (Primorie region).

Singapore
Singapore is an up-and-coming destination for visitors wanting to gamble, although there are currently only two casinos (both foreign owned), in Singapore. The Marina Bay Sands is the second most expensive standalone casino in the world, at a price of US$6.8 billion, and is among the world's ten most expensive buildings.

United States
With currently over 1,000 casinos, the United States has the largest number of casinos in the world. The number continues to grow steadily as more states seek to legalize casinos. 40 states now have some form of casino gambling. Interstate competition, such as gaining tourism, has been a driving factor to continuous legalization. Relatively small places such as Las Vegas are best known for gambling; larger cities such as Chicago are not defined by their casinos in spite of the large turnover.

The Las Vegas Valley has the largest concentration of casinos in the United States. Based on revenue, Atlantic City, New Jersey, ranks second, and the Chicago region third.

Top American casino markets by revenue (2022 annual revenues):

 * 1) Las Vegas Strip $7.05 billion
 * 2) Atlantic City $2.57 billion
 * 3) Chicago region $2.01 billion
 * 4) Baltimore–Washington Metropolitan Area $2.00 billion
 * 5) Mississippi Gulf Coast $1.61 billion
 * 6) New York City $1.46 billion
 * 7) Philadelphia $1.40 billion
 * 8) Detroit $1.29 billion
 * 9) St. Louis $1.03 billion
 * 10) Boulder Strip $967 million
 * 11) Reno/Sparks $889 million
 * 12) Kansas City $861 million
 * 13) The Poconos $849 million
 * 14) Lake Charles, Louisiana $843 million
 * 15) Black Hawk/Central City $812 million
 * 16) Downtown Las Vegas $731 million
 * 17) Tunica/Lula $696 million
 * 18) Cincinnati $655 million
 * 19) Shreveport/Bossier City $646 million
 * 20) Pittsburgh/Meadowlands $630 million

The Nevada Gaming Control Board divides Clark County, which is coextensive with the Las Vegas metropolitan area, into seven market regions for reporting purposes.

Native American gaming has been responsible for a rise in the number of casinos outside of Las Vegas and Atlantic City.

Vietnam
In Vietnam, the term "casinos" encompasses gambling activities within the country. Unofficially defined, a "casino" typically denotes a well-established and professional gambling establishment that is generally lawful but exclusively caters to foreign players. On the other hand, "gambling houses" or "gambling dens" are smaller, illicit gambling venues.

As of 2022, Vietnam has 9 operating casinos, including: Đồ Sơn casino (Hải Phòng), Lợi Lai casino, Hoàng Gia casino (Quảng Ninh), Hồng Vận casino (Quảng Ninh), Lào Cai casino (Lào Cai), Silver Shores casino (Đà Nẵng), Hồ Tràm casino (Bà Rịa – Vũng Tàu), Nam Hội An casino (Quảng Nam), Phú Quốc casino in Kien Giang.

In a survey conducted by the Vietnamese Institute for Sustainable Regional Development and released on September 30, 2015, it was found that 71% of the respondents held the belief that allowing Vietnamese individuals to access casinos would result in an increase in the number of players. Furthermore, 47.4% of the participants expressed the view that engaging in rewarding recreational activities has a positive impact on job opportunities for residents. Additionally, 46.2% of the respondents believed that such activities contribute positively to Vietnam's ability to attract investments.

Security
Given the large amounts of currency handled within a casino, both patrons and staff may be tempted to cheat and steal, in collusion or independently; most casinos have security measures to prevent this. Security cameras located throughout the casino are the most basic measure.

Modern casino security is usually divided between a physical security force and a specialized surveillance department. The physical security force usually patrols the casino and responds to calls for assistance and reports of suspicious or definite criminal activity. A specialized surveillance department operates the casino's closed circuit television system, known in the industry as the eye in the sky. Both of these specialized casino security departments work very closely with each other to ensure the safety of both guests and the casino's assets, and have been quite successful in preventing crime. Some casinos also have catwalks in the ceiling above the casino floor, which allow surveillance personnel to look directly down, through one way glass, on the activities at the tables and slot machines.

When it opened in 1989, The Mirage was the first casino to use cameras full-time on all table games.

In addition to cameras and other technological measures, casinos also enforce security through rules of conduct and behavior; for example, players at card games are required to keep the cards they are holding in their hands visible at all times.

Business practices
Over the past few decades, casinos have developed many different marketing techniques for attracting and maintaining loyal patrons. Many casinos use a loyalty rewards program used to track players' spending habits and target their patrons more effectively, by sending mailings with free slot play and other promotions. Casino Helsinki in Helsinki, Finland, for example, donates all of its profits to charity.

Crime
Casinos have been linked to organised crime, with early casinos in Las Vegas originally dominated by the American Mafia and in Macau by Triad syndicates.

According to some police reports, local incidence of reported crime often doubles or triples within three years of a casino's opening. In a 2004 report by the US Department of Justice, researchers interviewed people who had been arrested in Las Vegas and Des Moines and found that the percentage of problem or pathological gamblers among the arrestees was three to five times higher than in the general population.

It has been said that economic studies showing a positive relationship between casinos and crime usually fail to consider the visiting population: they count crimes committed by visitors but do not count visitors in the population measure, which overstates the crime rate. Part of the reason this methodology is used, despite the overstatement, is that reliable data on tourist count are often not available.

Occupational health and safety
Casinos are subject to specific regulations for worker safety, as casino employees are both at greater risk for cancers resulting from exposure to second-hand tobacco smoke and musculoskeletal injuries from repetitive motions while running table games over many hours. These are not the extent of the hazards casino workers may be exposed to, but every location is different. Most casinos do not meet the requirements for certain protective measures, such as protection against airborne metal dusts from coins or hearing protection against high noise levels, though these measures are still implemented when evaluated and determined necessary.

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Khmer language

Khmer (ខ្មែរ, UNGEGN: ) is an Austroasiatic language spoken by the Khmer people and the official and national language of Cambodia. Khmer has been influenced considerably by Sanskrit and Pali especially in the royal and religious registers, through Hinduism and Buddhism, due to Old Khmer being the language of the historical empires of Chenla, Angkor.

The vast majority of Khmer speakers speak Central Khmer, the dialect of the central plain where the Khmer are most heavily concentrated. Within Cambodia, regional accents exist in remote areas but these are regarded as varieties of Central Khmer. Two exceptions are the speech of the capital, Phnom Penh, and that of the Khmer Khe in Stung Treng province, both of which differ sufficiently enough from Central Khmer to be considered separate dialects of Khmer.

Outside of Cambodia, three distinct dialects are spoken by ethnic Khmers native to areas that were historically part of the Khmer Empire. The Northern Khmer dialect is spoken by over a million Khmers in the southern regions of Northeast Thailand and is treated by some linguists as a separate language. Khmer Krom, or Southern Khmer, is the first language of the Khmer of Vietnam, while the Khmer living in the remote Cardamom Mountains speak a very conservative dialect that still displays features of the Middle Khmer language.

Khmer is primarily an analytic, isolating language. There are no inflections, conjugations or case endings. Instead, particles and auxiliary words are used to indicate grammatical relationships. General word order is subject–verb–object, and modifiers follow the word they modify. Classifiers appear after numbers when used to count nouns, though not always so consistently as in languages like Chinese. In spoken Khmer, topic-comment structure is common, and the perceived social relation between participants determines which sets of vocabulary, such as pronouns and honorifics, are proper.

Khmer differs from neighboring languages such as Burmese, Thai, Lao, and Vietnamese in that it is not a tonal language. Words are stressed on the final syllable, hence many words conform to the typical Mon–Khmer pattern of a stressed syllable preceded by a minor syllable. The language has been written in the Khmer script, an abugida descended from the Brahmi script via the southern Indian Pallava script, since at least the 7th century. The script's form and use has evolved over the centuries; its modern features include subscripted versions of consonants used to write clusters and a division of consonants into two series with different inherent vowels.

Classification
Khmer is a member of the Austroasiatic language family, the autochthonous family in an area that stretches from the Malay Peninsula through Southeast Asia to East India. Austroasiatic, which also includes Mon, Vietnamese and Munda, has been studied since 1856 and was first proposed as a language family in 1907. Despite the amount of research, there is still doubt about the internal relationship of the languages of Austroasiatic.

Diffloth places Khmer in an eastern branch of the Mon-Khmer languages. In these classification schemes Khmer's closest genetic relatives are the Bahnaric and Pearic languages. More recent classifications doubt the validity of the Mon-Khmer sub-grouping and place the Khmer language as its own branch of Austroasiatic equidistant from the other 12 branches of the family.

Geographic distribution and dialects
Khmer is spoken by some 13 million people in Cambodia, where it is the official language. It is also a second language for most of the minority groups and indigenous hill tribes there. Additionally there are a million speakers of Khmer native to southern Vietnam (1999 census) and 1.4 million in northeast Thailand (2006).

Khmer dialects, although mutually intelligible, are sometimes quite marked. Notable variations are found in speakers from Phnom Penh (Cambodia's capital city), the rural Battambang area, the areas of Northeast Thailand adjacent to Cambodia such as Surin province, the Cardamom Mountains, and southern Vietnam. The dialects form a continuum running roughly north to south. Standard Cambodian Khmer is mutually intelligible with the others but a Khmer Krom speaker from Vietnam, for instance, may have great difficulty communicating with a Khmer native of Sisaket Province in Thailand.

The following is a classification scheme showing the development of the modern Khmer dialects.

 * Middle Khmer
 * Cardamom (Western) Khmer
 * Central Khmer
 * Surin (Northern) Khmer
 * Standard Khmer and related dialects (including Khmer Krom)

Standard Khmer, or Central Khmer, the language as taught in Cambodian schools and used by the media, is based on the dialect spoken throughout the Central Plain, a region encompassed by the northwest and central provinces.

Northern Khmer (called in Khmer) refers to the dialects spoken by many in several border provinces of present-day northeast Thailand. After the fall of the Khmer Empire in the early 15th century, the Dongrek Mountains served as a natural border leaving the Khmer north of the mountains under the sphere of influence of the Kingdom of Lan Xang. The conquests of Cambodia by Naresuan the Great for Ayutthaya furthered their political and economic isolation from Cambodia proper, leading to a dialect that developed relatively independently from the midpoint of the Middle Khmer period.

This has resulted in a distinct accent influenced by the surrounding tonal languages Lao and Thai, lexical differences, and phonemic differences in both vowels and distribution of consonants. Syllable-final, which has become silent in other dialects of Khmer, is still pronounced in Northern Khmer. Some linguists classify Northern Khmer as a separate but closely related language rather than a dialect.

Western Khmer, also called Cardamom Khmer or Chanthaburi Khmer, is spoken by a very small, isolated population in the Cardamom mountain range extending from western Cambodia into eastern Central Thailand. Although little studied, this variety is unique in that it maintains a definite system of vocal register that has all but disappeared in other dialects of modern Khmer.

Phnom Penh Khmer is spoken in the capital and surrounding areas. This dialect is characterized by merging or complete elision of syllables, which speakers from other regions consider a "relaxed" pronunciation. For instance, "Phnom Penh" is sometimes shortened to "m'Penh". Another characteristic of Phnom Penh speech is observed in words with an "r" either as an initial consonant or as the second member of a consonant cluster (as in the English word "bread"). The "r", trilled or flapped in other dialects, is either pronounced as a uvular trill or not pronounced at all.

This alters the quality of any preceding consonant, causing a harder, more emphasized pronunciation. Another unique result is that the syllable is spoken with a low-rising or "dipping" tone much like the "hỏi" tone in Vietnamese. For example, some people pronounce ត្រី ('fish') as : the  is dropped and the vowel begins by dipping much lower in tone than standard speech and then rises, effectively doubling its length. Another example is the word រៀន ('study'), which is pronounced, with the uvular "r" and the same intonation described above.

Khmer Krom or Southern Khmer is spoken by the indigenous Khmer population of the Mekong Delta, formerly controlled by the Khmer Empire but part of Vietnam since 1698. Khmers are persecuted by the Vietnamese government for using their native language and, since the 1950s, have been forced to take Vietnamese names. Consequently, very little research has been published regarding this dialect. It has been generally influenced by Vietnamese for three centuries and accordingly displays a pronounced accent, tendency toward monosyllabic words and lexical differences from Standard Khmer.

Khmer Khe is spoken in the Se San, Srepok and Sekong river valleys of Sesan and Siem Pang districts in Stung Treng Province. Following the decline of Angkor, the Khmer abandoned their northern territories, which the Lao then settled. In the 17th century, Chey Chetha XI led a Khmer force into Stung Treng to retake the area. The Khmer Khe living in this area of Stung Treng in modern times are presumed to be the descendants of this group. Their dialect is thought to resemble that of pre-modern Siem Reap.

Historical periods
Linguistic study of the Khmer language divides its history into four periods one of which, the Old Khmer period, is subdivided into pre-Angkorian and Angkorian. Pre-Angkorian Khmer is the Old Khmer language from 600 CE through 800. Angkorian Khmer is the language as it was spoken in the Khmer Empire from the 9th century until the 13th century.

The following centuries saw changes in morphology, phonology and lexicon. The language of this transition period, from about the 14th to 18th centuries, is referred to as Middle Khmer and saw borrowings from Thai in the literary register. Modern Khmer is dated from the 19th century to today.

The following table shows the conventionally accepted historical stages of Khmer.

Just as modern Khmer was emerging from the transitional period represented by Middle Khmer, Cambodia fell under the influence of French colonialism. Thailand, which had for centuries claimed suzerainty over Cambodia and controlled succession to the Cambodian throne, began losing its influence on the language. In 1887 Cambodia was fully integrated into French Indochina, which brought in a French-speaking aristocracy. This led to French becoming the language of higher education and the intellectual class. By 1907, the French had wrested over half of modern-day Cambodia, including the north and northwest where Thai had been the prestige language, back from Thai control and reintegrated it into the country.

Many native scholars in the early 20th century, led by a monk named Chuon Nath, resisted the French and Thai influences on their language. Forming the government sponsored Cultural Committee to define and standardize the modern language, they championed Khmerization, purging of foreign elements, reviving affixation, and the use of Old Khmer roots and historical Pali and Sanskrit to coin new words for modern ideas. Opponents, led by Keng Vannsak, who embraced "total Khmerization" by denouncing the reversion to classical languages and favoring the use of contemporary colloquial Khmer for neologisms, and Ieu Koeus, who favored borrowing from Thai, were also influential.

Koeus later joined the Cultural Committee and supported Nath. Nath's views and prolific work won out and he is credited with cultivating modern Khmer-language identity and culture, overseeing the translation of the entire Pali Buddhist canon into Khmer. He also created the modern Khmer language dictionary that is still in use today, helping preserve Khmer during the French colonial period.

Phonology
The phonological system described here is the inventory of sounds of the standard spoken language, represented using the International Phonetic Alphabet (IPA).

Consonants
The voiceless plosives may occur with or without aspiration (as  vs., etc.); this difference is contrastive before a vowel. However, the aspirated sounds in that position may be analyzed as sequences of two phonemes:. This analysis is supported by the fact that infixes can be inserted between the stop and the aspiration; for example ('big') becomes  ('size') with a nominalizing infix. When one of these plosives occurs initially before another consonant, aspiration is no longer contrastive and can be regarded as mere phonetic detail: slight aspiration is expected when the following consonant is not one of  (or  if the initial plosive is ).

The voiced plosives are pronounced as implosives by most speakers, but this feature is weak in educated speech, where they become.

In syllable-final position, and  approach  and  respectively. The stops are unaspirated and have no audible release when occurring as syllable finals.

In addition, the consonants, , and  occur occasionally in recent loan words in the speech of Cambodians familiar with French and other languages.

Vowels
Various authors have proposed slightly different analyses of the Khmer vowel system. This may be in part because of the wide degree of variation in pronunciation between individual speakers, even within a dialectal region. The description below follows Huffman (1970). The number of vowel nuclei and their values vary between dialects; differences exist even between the Standard Khmer system and that of the Battambang dialect on which the standard is based.

In addition, some diphthongs and triphthongs are analyzed as a vowel nucleus plus a semivowel ( or ) coda because they cannot be followed by a final consonant. These include: (with short monophthongs), , , , ; (with long monophthongs) , ; (with long diphthongs) , , , , and.

The Independent vowels are the vowels that can exist without a preceding or trailing consonant. The independent vowels may be used as monosyllabic words, or as the initial syllables in longer words. Khmer words never begin with regular vowels; they can, however, begin with independent vowels. Example: ឰដ៏, ឧទាហរណ៍, ឧត្តម, ឱកាស...។

Syllable structure
A Khmer syllable begins with a single consonant, or else with a cluster of two, or rarely three, consonants. The only possible clusters of three consonants at the start of a syllable are, and (with aspirated consonants analyzed as two-consonant sequences). There are 85 possible two-consonant clusters (including [pʰ] etc. analyzed as /ph/ etc.). All the clusters are shown in the following table, phonetically, i.e. superscript ʰ can mark either contrastive or non-contrastive aspiration (see above).

Slight vowel epenthesis occurs in the clusters consisting of a plosive followed by, in those beginning , and in the cluster.

After the initial consonant or consonant cluster comes the syllabic nucleus, which is one of the vowels listed above. This vowel may end the syllable or may be followed by a coda, which is a single consonant. If the syllable is stressed and the vowel is short, there must be a final consonant. All consonant sounds except and the aspirates can appear as the coda (although final /r/ is heard in some dialects, most notably in Northern Khmer).

A minor syllable (unstressed syllable preceding the main syllable of a word) has a structure of CV-, CrV-, CVN- or CrVN- (where C is a consonant, V a vowel, and N a nasal consonant). The vowels in such syllables are usually short; in conversation they may be reduced to, although in careful or formal speech, including on television and radio, they are clearly articulated. An example of such a word is មនុស្ស mɔnuh, mɔnɨh, mĕəʾnuh ('person'), pronounced, or more casually.

Stress
Stress in Khmer falls on the final syllable of a word. Because of this predictable pattern, stress is non-phonemic in Khmer (it does not distinguish different meanings).

Most Khmer words consist of either one or two syllables. In most native disyllabic words, the first syllable is a minor (fully unstressed) syllable. Such words have been described as sesquisyllabic (i.e. as having one-and-a-half syllables). There are also some disyllabic words in which the first syllable does not behave as a minor syllable, but takes secondary stress. Most such words are compounds, but some are single morphemes (generally loanwords). An example is ភាសា ('language'), pronounced.

Words with three or more syllables, if they are not compounds, are mostly loanwords, usually derived from Pali, Sanskrit, or more recently, French. They are nonetheless adapted to Khmer stress patterns. Primary stress falls on the final syllable, with secondary stress on every second syllable from the end. Thus in a three-syllable word, the first syllable has secondary stress; in a four-syllable word, the second syllable has secondary stress; in a five-syllable word, the first and third syllables have secondary stress, and so on. Long polysyllables are not often used in conversation.

Compounds, however, preserve the stress patterns of the constituent words. Thus សំបុកចាប, the name of a kind of cookie (literally 'bird's nest'), is pronounced, with secondary stress on the second rather than the first syllable, because it is composed of the words ('nest') and  ('bird').

Phonation and tone
Khmer once had a phonation distinction in its vowels, but this now survives only in the most archaic dialect (Western Khmer). The distinction arose historically when vowels after Old Khmer voiced consonants became breathy voiced and diphthongized; for example became. When consonant voicing was lost, the distinction was maintained by the vowel ; later the phonation disappeared as well. These processes explain the origin of what are now called a-series and o-series consonants in the Khmer script.

Although most Cambodian dialects are not tonal, the colloquial Phnom Penh dialect has developed a tonal contrast (level versus peaking tone) as a by-product of the elision of.

Intonation
Intonation often conveys semantic context in Khmer, as in distinguishing declarative statements, questions and exclamations. The available grammatical means of making such distinctions are not always used, or may be ambiguous; for example, the final interrogative particle ទេ can also serve as an emphasizing (or in some cases negating) particle.

The intonation pattern of a typical Khmer declarative phrase is a steady rise throughout followed by an abrupt drop on the last syllable.
 * ខ្ញុំមិនចង់បានទេ      ('I don't want it')

Other intonation contours signify a different type of phrase such as the "full doubt" interrogative, similar to yes–no questions in English. Full doubt interrogatives remain fairly even in tone throughout, but rise sharply towards the end.
 * អ្នកចង់ទៅលេងសៀមរាបទេ      ('do you want to go to Siem Reap?')

Exclamatory phrases follow the typical steadily rising pattern, but rise sharply on the last syllable instead of falling.
 * សៀវភៅនេះថ្លៃណាស់      ('this book is expensive!')

Grammar
Khmer is primarily an analytic language with no inflection. Syntactic relations are mainly determined by word order. Old and Middle Khmer used particles to mark grammatical categories and many of these have survived in Modern Khmer but are used sparingly, mostly in literary or formal language. Khmer makes extensive use of auxiliary verbs, "directionals" and serial verb construction. Colloquial Khmer is a zero copula language, instead preferring predicative adjectives (and even predicative nouns) unless using a copula for emphasis or to avoid ambiguity in more complex sentences. Basic word order is subject–verb–object (SVO), although subjects are often dropped; prepositions are used rather than postpositions.

Topic-Comment constructions are common and the language is generally head-initial (modifiers follow the words they modify). Some grammatical processes are still not fully understood by western scholars. For example, it is not clear if certain features of Khmer grammar, such as actor nominalization, should be treated as a morphological process or a purely syntactic device, and some derivational morphology seems "purely decorative" and performs no known syntactic work.

Lexical categories have been hard to define in Khmer. Henri Maspero, an early scholar of Khmer, claimed the language had no parts of speech, while a later scholar, Judith Jacob, posited four parts of speech and innumerable particles. John Haiman, on the other hand, identifies "a couple dozen" parts of speech in Khmer with the caveat that Khmer words have the freedom to perform a variety of syntactic functions depending on such factors as word order, relevant particles, location within a clause, intonation and context. Some of the more important lexical categories and their function are demonstrated in the following example sentence taken from a hospital brochure:

/loːk nĕəʔ pʰɗɑl cʰiəm teaŋ ʔɑh trəw tae tɔtuəl nəw kaː pinɨt riəŋ kaːj nɨŋ pʰɗɑl nəw prɑʋɔət sokʰapʰiəp ciə mun ciə sən/

you[RESP] you[FAM] provide blood every all must {have to} receive {} {} examine shape body and provide {} history health be before be first

PN PN VERB NOUN PTCL ADJ AUX INT VERB OM NMLZ VERB NOUN NOUN CNJ VERB OM NOUN ADJ COP ADV COP ADV

'All blood donors must pass a physical examination and provide a health history first (before they can give blood).'

Morphology
Modern Khmer is an isolating language, which means that it uses little productive morphology. There is some derivation by means of prefixes and infixes, but this is a remnant of Old Khmer and not always productive in the modern language. Khmer morphology is evidence of a historical process through which the language was, at some point in the past, changed from being an agglutinative language to adopting an isolating typology. Affixed forms are lexicalized and cannot be used productively to form new words. Below are some of the most common affixes with examples as given by Huffman.

Compounding in Khmer is a common derivational process that takes two forms, coordinate compounds and repetitive compounds. Coordinate compounds join two unbound morphemes (independent words) of similar meaning to form a compound signifying a concept more general than either word alone. Coordinate compounds join either two nouns or two verbs. Repetitive compounds, one of the most productive derivational features of Khmer, use reduplication of an entire word to derive words whose meaning depends on the class of the reduplicated word. A repetitive compound of a noun indicates plurality or generality while that of an adjectival verb could mean either an intensification or plurality.

Coordinate compounds:

[ʔəwpuk] + [mɗaːj] ⇒ [ʔəwpuk.mɗaːj]

father {} mother {} parents

[ɗək] + [nɔəm] ⇒ [ɗəknŏəm]

{to transport} {} {to bring} {} {to lead}

Repetitive compounds:

[cʰap] ⇒ [cʰapcʰap]

fast {} {very fast, quickly}

[srəj] ⇒ [srəjsrəj]

women {} {women, women in general}

Nouns and pronouns
Khmer nouns do not inflect for grammatical gender or singular/plural. There are no articles, but indefiniteness is often expressed by the word for "one" (មួយ ) following the noun as in ឆ្កែមួយ ( "a dog"). Plurality can be marked by postnominal particles, numerals, or reduplication of a following adjective, which, although similar to intensification, is usually not ambiguous due to context.

[cʰkae craən]

dog many

"many dogs"

[cʰkae piː]

dog two

"two dogs"

[cʰkae tʰom tʰom]

dog large large

'large dogs'

Classifying particles are used after numerals, but are not always obligatory as they are in Thai or Chinese, for example, and are often dropped in colloquial speech. Khmer nouns are divided into two groups: mass nouns, which take classifiers; and specific, nouns, which do not. The overwhelming majority are mass nouns.

[kʰmawɗaj piː ɗaəm]

pencil two {CLF [long cylindrical object]}

"two pencils"

Possession is colloquially expressed by word order. The possessor is placed after the thing that is possessed. Alternatively, in more complex sentences or when emphasis is required, a possessive construction using the word របស់ (, "property, object") may be employed. In formal and literary contexts, the possessive particle នៃ is used:

[puəʔmaːʔ kʰɲom]

friend I

"my friend"

[puəʔmaːʔ rɔːɓɑh kʰɲom]

friend property I

"my friend"

[puəʔmaːʔ nɨj kʰɲom]

friend of I

"my friend"

Pronouns are subject to a complicated system of social register, the choice of pronoun depending on the perceived relationships between speaker, audience and referent (see Social registers below). Khmer exhibits pronoun avoidance, so kinship terms, nicknames and proper names are often used instead of pronouns (including for the first person) among intimates. Subject pronouns are frequently dropped in colloquial conversation.

Adjectives, verbs and verb phrases may be made into nouns by the use of nominalization particles. Three of the more common particles used to create nouns are, , and. These particles are prefixed most often to verbs to form abstract nouns. The latter, derived from Sanskrit, also occurs as a suffix in fixed forms borrowed from Sanskrit and Pali such as ("health") from  ("to be healthy").

[kaː rŭəhnɨw]

NMLZ {to live}

'life'

[sec {kdəj deik}]

NMLZ {to lie down}

'[the act of] lying down'

[pʰiəp {sɑːm rum'}]

NMLZ appropriate

'appropriateness'

Adjectives and adverbs
Adjectives, demonstratives and numerals follow the noun they modify. Adverbs likewise follow the verb. Morphologically, adjectives and adverbs are not distinguished, with many words often serving either function. Adjectives are also employed as verbs as Khmer sentences rarely use a copula.

Degrees of comparison are constructed syntactically. Comparatives are expressed using the word ជាង : "A X [B]" (A is more X [than B]). The most common way to express superlatives is with ជាងគេ : "A X " (A is the most X). Intensity is also expressed syntactically, similar to other languages of the region, by reduplication or with the use of intensifiers.

/srəj nuh sʔaːt/

girl DEM pretty

'That girl is pretty.'

/srəj nuh sʔaːt sʔaːt/

girl DEM pretty pretty

'That girl is very pretty.'

/srəj nuh sʔaːt nah/

girl DEM pretty very

'That girl is very pretty.'

Verbs
As is typical of most East Asian languages, Khmer verbs do not inflect at all; tense, aspect and mood can be expressed using auxiliary verbs, particles (such as កំពុង, placed before a verb to express continuous aspect) and adverbs (such as "yesterday", "earlier", "tomorrow"), or may be understood from context. Serial verb construction is quite common.

Khmer verbs are a relatively open class and can be divided into two types, main verbs and auxiliary verbs. Huffman defined a Khmer verb as "any word that can be (negated)", and further divided main verbs into three classes.

Transitive verbs are verbs that may be followed by a direct object:

/kʰɲom ɲam ɓaj/

I eat rice

"I eat rice."

/kʰɲom tɨɲ ɓaːrəj/

I buy cigarettes

"I buy cigarettes."

Intransitive verbs are verbs that can not be followed by an object:

/kʰɲom ɗaə tɨw pʰsaː/

I walk DIR market

"I walk to the market."

/ʔaɲcəɲ ʔɑŋkuj/

{to invite} {to sit}

"Please sit."

Adjectival verbs are a word class that has no equivalent in English. When modifying a noun or verb, they function as adjectives or adverbs, respectively, but they may also be used as main verbs equivalent to English "be + adjective".

/proh sɑŋ.haː /

boy handsome

"handsome boy"

/proh nuh {tʰʋəː kaː} lʔɑː /

boy DEM {to work} good

"That boy works well."

/proh nuh sɑŋ.haː /

boy DEM handsome

"That boy is handsome."

Syntax
Syntax is the rules and processes that describe how sentences are formed in a particular language, how words relate to each other within clauses or phrases and how those phrases relate to each other within a sentence to convey meaning. Khmer syntax is very analytic. Relationships between words and phrases are signified primarily by word order supplemented with auxiliary verbs and, particularly in formal and literary registers, grammatical marking particles. Grammatical phenomena such as negation and aspect are marked by particles while interrogative sentences are marked either by particles or interrogative words equivalent to English "wh-words".

A complete Khmer sentence consists of four basic elements—an optional topic, an optional subject, an obligatory predicate, and various adverbials and particles. The topic and subject are noun phrases, predicates are verb phrases and another noun phrase acting as an object or verbal attribute often follows the predicate.

Basic constituent order
When combining these noun and verb phrases into a sentence the order is typically SVO:

/kʰɲom ʔaoj ceik muəj cɑmnuən/

I give banana one bunch[CLF]

SBJ VERB OBJ {} {}

'I gave a bunch of bananas.'

When both a direct object and indirect object are present without any grammatical markers, the preferred order is SV(DO)(IO). In such a case, if the direct object phrase contains multiple components, the indirect object immediately follows the noun of the direct object phrase and the direct object's modifiers follow the indirect object:

/kʰɲom ʔaoj ceik cruːk muəj cɑmnuən/

I give banana pig one bunch[CLF]

SBJ VERB DO IO {} {}

'I gave the pig a bunch of bananas.'

This ordering of objects can be changed and the meaning clarified with the inclusion of particles. The word, which normally means "to arrive" or "towards", can be used as a preposition meaning "to":

/kʰɲom ʔaoj ceik muəj cɑmnuən dɑl cruːk/

I give banana one bunch[CLF] toward pig

'I gave a bunch of bananas to the pigs.'

Alternatively, the indirect object could precede the direct object if the object-marking preposition were used:

/kʰɲom ʔaoj cruːk nəw ceik muəj cɑmnuən/

I give pig OM banana one bunch[CLF]

'I gave the pig a bunch of bananas.'

However, in spoken discourse OSV is possible when emphasizing the object in a topic–comment-like structure.

/tuːk muəj kɔŋ pram ʔɑŋ/

boat one {to sit} five monk[CLF]

'In a boat sit five monks.'

/ʋɪʔciə cao luəc mɨn baːn/

science thief {to steal} NEG COMPL

'Science, a thief can not steal.'

Noun phrase
The noun phrase in Khmer typically has the following structure:

The elements in parentheses are optional. Honorifics are a class of words that serve to index the social status of the referent. Honorifics can be kinship terms or personal names, both of which are often used as first and second person pronouns, or specialized words such as ('god') before royal and religious objects. The most common demonstratives are ('this, these') and  ('that, those'). The word ('those over there') has a more distal or vague connotation.

If the noun phrase contains a possessive adjective, it follows the noun and precedes the numeral. If a descriptive attribute co-occurs with a possessive, the possessive construction is expected.

Some examples of typical Khmer noun phrases are:

The Khmer particle marked attributes in Old Khmer noun phrases and is used in formal and literary language to signify that what precedes is the noun and what follows is the attribute. Modern usage may carry the connotation of mild intensity.

/ʋiəl srae dɑː {lʋɨŋ lʋəːj}/

field paddy ADJ.MARKER vast

'(very) expansive fields and paddies'

Verb phrase
Khmer verbs are completely uninflected, and once a subject or topic has been introduced or is clear from context the noun phrase may be dropped. Thus, the simplest possible sentence in Khmer consists of a single verb. For example, 'to go' on its own can mean "I'm going.", "He went.", "They've gone.", "Let's go.", etc.  This also results in long strings of verbs such as:

/kʰɲom cɑng tɨw daə leːng/

I {to want} {to go} {to walk} {to play}

'I want to go for a stroll.'

Khmer uses three verbs for what translates into English as the copula. The general copula is ; it is used to convey identity with nominal predicates. For locative predicates, the copula is. The verb is the "existential" copula meaning "there is" or "there exists".

/piəsaː ciə kaː sɑmdaeŋ cət kumnɨt krŏəp jaːŋ/

language copula NMLZ {to express} heart thought all kind

'Language is the expression of all emotions and ideas'

/ʋiə nɨw cɪt ʋŏət/

he copula close temple

'He is close to the temple.'

/miən pʰaen kaː/

to exist plan

'There is a plan.'

Negation is achieved by putting មិន before the verb and the particle ទេ  at the end of the sentence or clause. In colloquial speech, verbs can also be negated without the need for a final particle, by placing ឥត before them.

/kʰɲom cɨə/

I {to believe}

'I believe.'

/kʰɲom mɨn cɨə teː/

I NEG {to believe} NEG

'I don't believe.'

/kʰɲom ʔɑt cɨə/

I NEG {to believe}

'I don't believe.'

Past tense can be conveyed by adverbs, such as "yesterday" or by the use of perfective particles such as

/kŏət tɨw msəlmɨɲ/

he {to go} yesterday

'He went yesterday.'

/kŏət tɨw haəj/

he {to go} pfv

'He left.' or 'He's already gone.'

Different senses of future action can also be expressed by the use of adverbs like "tomorrow" or by the future tense marker, which is placed immediately before the verb, or both:

/sʔaek kʰɲom nɨŋ tɨw {saːlaː riən}/

tomorrow I FUT {to go} school

'Tomorrow, I will go to school.'

Imperatives are often unmarked. For example, in addition to the meanings given above, the "sentence" can also mean "Go!". Various words and particles may be added to the verb to soften the command to varying degrees, including to the point of politeness (jussives):

/cou saːk lbɑːŋ kʰluən aeŋ coh/

IMP try try you REFL IMP

'Go ahead and try it yourself.'

/soum tʰʋəː taːm bɑndam kŏət tɨw/

please do follow instruction he IMP

'Please follow his instructions.'

Prohibitives take the form " + " and also are often softened by the addition of the particle to the end of the phrase.

/kom nɨw tiː nih ʔəj/

PROH {to be} place DEM COHORT

'Don't stay in this place.'

Questions
There are three basic types of questions in Khmer. Questions requesting specific information use question words. Polar questions are indicated with interrogative particles, most commonly, a homonym of the negation particle. Tag questions are indicated with various particles and rising inflection. The SVO word order is generally not inverted for questions.

/loːk tɨw naː/

you {to go} where

'Where are you going?'

/loːk sdap baːn teː/

you understand modal Q

'Can you understand?'

/loːk tɨw psaː haəj rɨː nɨw/

you {to go} market PRF or yet

'Have you gone to the store yet?'

In more formal contexts and in polite speech, questions are also marked at their beginning by the particle.

/taə loːk ʔɑɲcəːɲ tɨw naː/

Q you {to invite} {to go} where

'Where are you going, sir?'

Passive voice
Khmer does not have a passive voice, but there is a construction utilizing the main verb ("to hit", "to be correct", "to affect") as an auxiliary verb meaning "to be subject to" or "to undergo"—which results in sentences that are translated to English using the passive voice.

/piː msəlmɨɲ kʰɲom trəw cʰkae kʰam/

from yesterday I {to undergo} dog {to bite}

'Yesterday I was bitten by a dog.'

Clause syntax
Complex sentences are formed in Khmer by the addition of one or more clauses to the main clause. The various types of clauses in Khmer include the coordinate clause, the relative clause and the subordinate clause. Word order in clauses is the same for that of the basic sentences described above. Coordinate clauses do not necessarily have to be marked; they can simply follow one another. When explicitly marked, they are joined by words similar to English conjunctions such as ("and") and  ("and then") or by clause-final conjunction-like adverbs  and, both of which can mean "also" or "and also"; disjunction is indicated by  ("or").

Relative clauses can be introduced by ("that") but, similar to coordinate clauses, often simply follow the main clause. For example, both phrases below can mean "the hospital bed that has wheels".

/krɛː pɛːt miən kɑŋ ruɲ/

bed hospital have wheel {to push}

"the hospital bed that has wheels"

/krɛː pɛːt dael miən kɑŋ ruɲ/

bed hospital REL have wheel {to push}

"the hospital bed that has wheels"

Relative clauses are more likely to be introduced with if they do not immediately follow the head noun. Khmer subordinate conjunctions always precede a subordinate clause. Subordinate conjunctions include words such as ("because"),  ("seems as if") and  ("in order to").

Numerals
Counting in Khmer is based on a biquinary system: the numbers from 6 to 9 have the form "five one", "five two", etc. The words for multiples of ten from 30 to 90 are not related to the basic Khmer numbers, but are Chinese in origin, and probably came to Khmer via Thai. Khmer numerals, which were inherited directly from Indian numerals, are used more widely than Western numerals, which like Khmer numerals were inherited from Indian, but first passed through the Arabic numerals before reaching the west.

The principal number words are listed in the following table, which gives Western and Khmer digits, Khmer spelling and IPA transcription.

Intermediate numbers are formed by compounding the above elements. Powers of ten are denoted by loan words: រយ  (100), ពាន់   (1,000), ម៉ឺន   (10,000), សែន   (100,000) and លាន   (1,000,000) from Thai and កោដិ   (10,000,000) from Sanskrit.

Ordinal numbers are formed by placing the particle ទី  before the corresponding cardinal number.

Social registers
Khmer employs a system of registers in which the speaker must always be conscious of the social status of the person spoken to. The different registers, which include those used for common speech, polite speech, speaking to or about royals and speaking to or about monks, employ alternate verbs, names of body parts and pronouns. As an example, the word for "to eat" used between intimates or in reference to animals is. Used in polite reference to commoners, it is. When used of those of higher social status, it is or. For monks the word is and for royals,. Another result is that the pronominal system is complex and full of honorific variations, just a few of which are shown in the table below.

Writing system

Khmer is written with the Khmer script, an abugida developed from the Pallava script of India before the 7th century when the first known inscription appeared. Written left-to-right with vowel signs that can be placed after, before, above or below the consonant they follow, the Khmer script is similar in appearance and usage to Thai and Lao, both of which were based on the Khmer system. The Khmer script is also distantly related to the Mon–Burmese script. Within Cambodia, literacy in the Khmer alphabet is estimated at 77.6%.

Consonant symbols in Khmer are divided into two groups, or series. The first series carries the inherent vowel while the second series carries the inherent vowel. The Khmer names of the series, ('voiceless') and  ('voiced'), respectively, indicate that the second series consonants were used to represent the voiced phonemes of Old Khmer. As the voicing of stops was lost, however, the contrast shifted to the phonation of the attached vowels, which, in turn, evolved into a simple difference of vowel quality, often by diphthongization. This process has resulted in the Khmer alphabet having two symbols for most consonant phonemes and each vowel symbol having two possible readings, depending on the series of the initial consonant:

Examples
The following text is from Article 1 of the Universal Declaration of Human Rights.

title: Khmer language