INFORMATION ABOUT COMPUTER

 Why Is A Computer So Powerful?

•Fast speed of calculations and storing of information.
•Reliability (low failure rate).
•Accuracy.
•Ability to store huge amounts of data and information.
•Ability to communicate with other computers.. 

What 

Are The Primary Components Of A Computer ?

•Input devices.

•Central Processing Unit (containing the control unit and the arithmetic/logic unit).

•Memory.

•Output devices.

•Storage devices

          Uses of Computer

PC at Home   

    

Common uses for the computer within the home

•Computer games

•Working from Home

•Banking from Home

•Connecting to the Web

      Uses of Computer

Office Applications

Stock Control

The stock control system keeps track of the number of items in stock and can automatically order replacement items when required.

Accounts / Payroll

Due to the repetitive nature of accounts a computer system is ideally suited to this task and accuracy is guaranteed.

           Uses of Computer

Computers in Daily Life

•Accounts

•Games

•Educational 

•On-line banking

•Smart ID cards

•Supermarkets

•Working from home (Tele-working)

•Internet

          Type Of  Computer

              Analog  Computer 

      Digital Computer

Analog Computer

•Analog Computers handle or process information which is of a physical nature, as for example, temperature, pressure etc.

Digital Computer

•Digital computers process information which is essentially in a binary or two-state form, namely zero and one.

•When talking about computers, we mostly refer to the digital type of electronic machines. These are based on the measuring of analog or equivalent physical value.

     Data and Information

All computer processing requires  data , which is a collection of  raw facts, figures and symbols, such as as numbers, words, images, video and sound, given to  the computer during the input phase.
 
Computers manipulate data to create information . Information is data that is organized, 
meaningful , and useful .
       
During the output phase, the information that has has been created is put into some form,                      such as a printed  repot.
           
The information can also be put in computer storage for future use.