Computer Systems

Input Process And Output

These are the three stages of a computer.


A computer monitor is an electronic device that shows pictures, they usually look abit like televisions . The difference between a monitor and a television is that monitors don't have a television tuner to change channels. Often monitors have better display resolution than televisions.


This is the short term memory ( Random Access Memory) which stores data while the computer is running but loses it when it is switched off.


The motherboard is the main circuit board inside your PC .it connects to the CPU , RAM, disk drives and graphics/ sound cards.

Touch Screen

This enables you to touch the screen instead of using buttons to type or play games this makes it a bit easier.

Opitcal Drive

An optical disc drive (ODD) is a disk drive that uses laser light or electromagnetic waves within or near the visible light spectrum as part of the process of reading or writing data to or from optical discs.

Hard Drive

This is a data storage device.

Operating Systems

An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. The operating system is a component of the system software in a computer system. Application programs usually require an operating system to function.