COMPUTER BASICS

Classification of computers

1. In terms of manufacturer

v   Dell computers

v  HP computers

v  Toshiba Computers

v   Compaq computers

v   Hitachi computers

v   IBM computers

2. In terms of power and speed

v  A  supercomputer

v  Mainframe computers

v  Minicomputer

v  Workstations

v  Personal computer (PC)

v  Tablet Computer

3. In terms of data type/construction

v  Digital   computer

v  Analog computer

v  Hybrid computer

4. In terms of purpose/application

v  Special purpose/specific purpose computers

Eg. Personal/Digital Assistants.

      Network Computers.

     Computer system to operate a petrol pump.

     Automatic opening/closing of door.

v  General purpose computer

5.Classification according to size:

(Increasing in size)

-Handheld

- Notebook

- Laptop

–   Portable

–   Desktop

–   Mainframe

–   Supercomputers          

6. Classification-by use              

v  Home e.g., Desktops and Laptops

v  Personal e.g., PC

v  Professional e.g., mainframe

v  Workstation

v  Single user e.g., PC

v  Multi-user e.g., servers

7.Interms of generation/History

v  1^st Generation(Vacuum tube technology)

v  2^nd Generation( Transistors technology)

v  3^rd Generation(Integrated Circuit technology)

v  4^th Generation(Larger scales integrated (LSI) )