this ppt explains various types of computer ..

2. Classification of computer
by function
Classification of computer
by size & capacity
Classification of computer
by speed
analog digital hybrid
Super
computer
Mainframe
computer
Mini
computer
Micro
computer
Desktop
computer
Pocket
computer

3. 1. Classification Of Computer By
Function
a) Analog computer
The computers in which data varies
continuously i.e., the movement of data is
continuous. Ex: Thermometer, Analog
clock, Speedometer

4. b) Digital computer
The computer in which data flows in discrete form
(by parts). Ex: digital watch
c) Hybrid computer
Combination of analog and digital computer.
Ex: air pressure, PC

5. 2. Classification of computer by size & capacity
a) Super computer
Super computer handles complex scientific and
statistical applications or programs. High speed,
high capacity memory but non-portable as size is
very large. Ex: railway reservation, weather
forecasting.
b) Mainframe computer
Smaller when compared to super
computer. Memory capacity high
but non- portable.

6. c) Mini computer: processing speed is
slower than super and mainframe
computers. These are portable.
d) Micro computer: smaller than mini
computer. High speed but slower
than mini computer.
e) Desktop computer: used in
education system & small scale
industry. Home computers,
portable, high speed.
d) Pocket computer: very small in size.
portable but memory capacity is less.

7. Different processors have different processing
speed
Examples:
 X86
 8086 & 8088
 Pentium
 Pentium II
 Celeron
 Xeon