computer - ορισμός. Τι είναι το computer
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Τι (ποιος) είναι computer - ορισμός

GENERAL-PURPOSE DEVICE FOR PERFORMING ARITHMETIC OR LOGICAL OPERATIONS
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  • Sir William Thomson]]'s third tide-predicting machine design, 1879–81
  • 算盘}}). The number represented on this [[abacus]] is 6,302,715,408.
  • alt=Two women are seen by the Colossus computer.
  • Video demonstrating the standard components of a "slimline" computer
  • [[Cray]] designed many supercomputers that used multiprocessing heavily.
  • Babbage's]] [[Difference engine]]
  • [[ENIAC]] was the first electronic, Turing-complete device, and performed ballistics trajectory calculations for the [[United States Army]].
  • The actual first computer bug, a moth found trapped on a relay of the [[Harvard Mark II]] computer
  • A 1970s [[punched card]] containing one line from a [[Fortran]] program. The card reads: "Z(1) = Y + W(1)" and is labeled "PROJ039" for identification purposes.
  • [[Hard disk drive]]s are common storage devices used with computers.
  • routes]] on the Internet
  • website=www.computerhope.com}}</ref>
  • gate]] (G), body (B), source (S) and drain (D) terminals. The gate is separated from the body by an insulating layer (pink).
  • memory cells]]).
  • Diagram showing how a particular [[MIPS architecture]] instruction would be decoded by the control system
  • The [[Antikythera mechanism]], dating back to [[ancient Greece]] circa 150&ndash;100 BC, is an early [[analog computing]] device.
  • The [[Ishango bone]], a [[bone tool]] dating back to [[prehistoric Africa]]
  • Museum of Science and Industry]] in Manchester, England
  • A section of the reconstructed [[Manchester Baby]], the first electronic [[stored-program computer]]
  • A [[slide rule]]
  • [[Bipolar junction transistor]] (BJT)
  • alt=A human computer.
  • Z3]], the first fully automatic, digital (electromechanical) computer

Computer         
·noun One who computes.
computer         
<computer> A machine that can be programmed to manipulate symbols. Computers can perform complex and repetitive procedures quickly, precisely and reliably and can quickly store and retrieve large amounts of data. The physical components from which a computer is constructed (electronic circuits and input/output devices) are known as "hardware". Most computers have four types of hardware component: CPU, input, output and memory. The CPU ({central processing unit}) executes programs ("software") which tell the computer what to do. Input and output (I/O) devices allow the computer to communicate with the user and the outside world. There are several kinds of memory - fast, expensive, short term memory (e.g. RAM) to hold intermediate results, and slower, cheaper, long-term memory (e.g. magnetic disk and magnetic tape) to hold programs and data between jobs. See also analogue computer. (1995-03-10)
computer         
¦ noun an electronic device which is capable of receiving information (data) and performing a sequence of logical operations in accordance with a predetermined but variable set of procedural instructions (program) to produce a result in the form of information or signals.

Βικιπαίδεια

Computer

A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as programs. These programs enable computers to perform a wide range of tasks. A computer system is a nominally complete computer that includes the hardware, operating system (main software), and peripheral equipment needed and used for full operation. This term may also refer to a group of computers that are linked and function together, such as a computer network or computer cluster.

A broad range of industrial and consumer products use computers as control systems. Simple special-purpose devices like microwave ovens and remote controls are included, as are factory devices like industrial robots and computer-aided design, as well as general-purpose devices like personal computers and mobile devices like smartphones. Computers power the Internet, which links billions of other computers and users.

Early computers were meant to be used only for calculations. Simple manual instruments like the abacus have aided people in doing calculations since ancient times. Early in the Industrial Revolution, some mechanical devices were built to automate long, tedious tasks, such as guiding patterns for looms. More sophisticated electrical machines did specialized analog calculations in the early 20th century. The first digital electronic calculating machines were developed during World War II. The first semiconductor transistors in the late 1940s were followed by the silicon-based MOSFET (MOS transistor) and monolithic integrated circuit chip technologies in the late 1950s, leading to the microprocessor and the microcomputer revolution in the 1970s. The speed, power and versatility of computers have been increasing dramatically ever since then, with transistor counts increasing at a rapid pace (as predicted by Moore's law), leading to the Digital Revolution during the late 20th to early 21st centuries.

Conventionally, a modern computer consists of at least one processing element, typically a central processing unit (CPU) in the form of a microprocessor, along with some type of computer memory, typically semiconductor memory chips. The processing element carries out arithmetic and logical operations, and a sequencing and control unit can change the order of operations in response to stored information. Peripheral devices include input devices (keyboards, mice, joystick, etc.), output devices (monitor screens, printers, etc.), and input/output devices that perform both functions (e.g., the 2000s-era touchscreen). Peripheral devices allow information to be retrieved from an external source and they enable the result of operations to be saved and retrieved.

Παραδείγματα από το σώμα κειμένου για computer
1. Clarke‘s departmental battle–honours include the Passport Office computer, the criminal records computer, the magistrates‘ data computer and the mother of them all: the "voluntary"–ID cards computer.
2. The computer–to–computer Web calling software requires speakers and a microphone, or a computer–ready headset.
3. A fast–moving computer worm Tuesday shut down computer systems using Microsoft operating software, hitting computer systems across the United States and reportedly in Germany and Asia.
4. The investigation will examine his BlackBerry handheld computer, his mobile phone and his desktop computer.
5. The Intel customers are computer system manufacturers that include Taiwan–based Quanta Computer Inc.