What is the definition of computer define briefly

What is the definition of computer define briefly

Computer Definitions:

All these definitions are from different scholars and sites as a reference. 
1.  Computer is an electronic machine which receives data through input devices, process and then shows data on output devices.

2.  Computer is a programmable electronic device that accepts data, perform mathematical and logical operations at high speed, and display the results of these operations.

3. Computer is an electronic device which is capable of receiving information (data) in a specific form and of performing a sequence of operations in accordance with a predetermined but variable set of procedural 

instructions (program) to produce a result in the form of information or signals.

4. An electronic machine that can store and work with large amounts of information is called computer.

5. An automatic electronic machine that can store and process data is known as computer.

6. A computer is generally defined as a programmable machine. The two principal characteristics of a computer are: it responds to a specific set of instructions in a well-defined manner and it can execute a pre-recorded list of instructions (a program).

7. An electronic device which is capable of receiving information (data) in a particular form and of performing a sequence of operations in accordance with a predetermined but variable set of procedural instructions (program) to produce a result in the form of information or signals.

8. A computer is an electronic device that manipulates information, or data. It has the ability to store, retrieve, and process data. You probably already know that you can use a computer to type documents, send email, play games, and browse the Web. You can also use it to edit or create spread sheets, presentations, and even videos.

9.  The definition of a computer is a person or electronic device that makes and stores quick calculations or processes information.

10. A device used for computing and otherwise processing information; specif., an electronic machine which, by means of stored instructions and information, is used to perform rapid, often complex calculations, compile and correlate data, download and play audio and video communications, access the World Wide Web, send and receive e-mail, etc.; now, esp., digital computer.

History:  

Computer were gradually developed, Abacus was the first device invented by Chinese for counting, in 1940 MARK 1 was invented and recognized as first digital computer it was huge machine.

Personal Computer

A personal computer (PC) which was introduced by IBM (International Business Machine) in 1981.  It mainly consists of system's unit which contains mainly Central Processing Unit (CPU).