Classification of computer . pdf

Akash khan

3. Main catagories of computer

4. Micro computer
Ø It is designed to be used by one person at a time .
Ø It consists of a processor , memory and one or more
input output and storage devices.
Ø Micro computers are available in different shape or
sizes.
1. Desktop computer
2. Laptop
3.Tablets

5. Laptop
Tablet
Desktop computer

6. Mobile devices
Ø A mobile devices is a computing device designed to hold
in the hand .
Ø The programs and data permanently stored on special
memory or a card.
1. Smartphone
2.handheld computer

7. Smart phones
Handheld computer

8. Minicomputers
Ø minicomputer is typically larger , more expensive and
more powerful tan desktop computer.
Ø It is more reliable than desktop computer.
Ø It generally consist of two or more processors.
Ø minicomputer can serve upto several hundrends
connected computers simultaneously .It is normally
accessed by users through a personal computers.
1. Prime 9955
2.HP 3000 3. AS 400

9. Prime 9955
Hp 3000
AS 400

10. Mainframe computer
Ø Mainframe computer is a large computer in terms of
power ,speed and price.
Ø Mainframe computer consists of multiple processor ,it is
more powerful than minicomputer.
Ø It is specially designed to perform multiple tasks for
multiple user.
Examples
1. IBMS-390
2.NEC 610
3.DEC 10

11. IBMS 390 NEC 610
DEC 10

12. Supercomputer
Ø Supercomputer is the fastest and the most powerful
computer .
Ø It is the biggest in size and more expensive in price than
any other computer. It is used to perform complex tasks.
Ø Modern supercomputer consists of thousand of
microprocessors.
Ø The cost of one supercomputer is upto several billion
dollars.
Example
1. Blue Gene 2. Roadrunner 3. Deep Blue

13. Deep blue
Blue Gene
Roadrunner