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Computer -Main Points

1-  Word is the combination of two or more than two bytes.

2- Data is a plural word which means facts or information.

3- A mouse is a part of Computer.
A random access memory (RAM) is a part of a Computer.
A read-only memory (ROM), is a part of a Computer.

4- A Floppy disk is a part of a computer and it stores data and programs.

5- A Hard disk stores information inside some kinds of computer.

6-A Keyboard is a part of a computer; it has rows of buttons, called keys.

7-A Megabyte is a unit of measurement which measures an amount of data or the size of the memory in a computer.

8-Bit is the basic unit of Inverters. It can have two values one and zero only.

9-A programme which converts assembly language programme into Machine language programme.

10-A Modem is a part of computers which connects a computer to a telephone line.

11- Compiler is a programme which translates a high-level language programme into Machine language.

12-A Central Processing Unit (CPU), is a part of a Computer, it uses a program to change data that pass through it.

13-A collection of programmes written to bring the hardware of a computer system into operation is Software.

14-The Operating System (OS) is an organised collection of routines and procedures for operating a computer.

15-Hard copy is the information which is printed onto paper. The information usually comes from a computer or from a fax machine.

16-Boolean algebra was developed to deal with binary numbers. Under the binary system all ordinary Arithmetical operations are reduced to their simplest form.

17-A Computer is an electronic machine which can solve problems very quickly.

18-A standard keyboard has a total of 104 keys.

19- Byte is a combination of Eight bits.

20-A Command is a kind of coded message.

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