Comptuing Definitions

Input Devices - to input data to a system eg a barcode reader

Output Devices - to give infomation from the system to the user eg to print a receipt

Storage Devices - keep data that has been collected for furture use

Systems Software - program that control the operation of a computer system

Applications Software - programs that allow the users to do something useful

LAN - Local Area Network where computers are linked together over a small local area

Operating System -

• Used to control the hardware of the system
• Provides an user interface for the operator: to allow communication bewtween user and hardware
• Has many utilites which can be used to carry out housekeeping on your system
• Used to provide a platform on which applications can run
• Handles communications using protocool to govern them

ROM Vs Ram -

• ROM is non volatile, RAM is
• ROM is normally smaller
• Data in ROM cannot be changed, in RAM it can