Prepared by my friends

2. What is computer?
• Computer is an electronic device.
• Takes input from the users and gives desired output.

3. • On the Basis of Data Computer can be categorized
as : - -
 Analog computer
Digital computer
• Micro computer
• Mini computer
• Mainframe computer
• Super computer
Hybrid computer
Types Of Computer

4. Analog computer
• The data, which is represented in a continuous manner,
is called as the analog data.
• The computer or device, which represents this type of
data, is called as Analog Computer.
Example: Thermometer, Speedometer of vehicle.

6. Digital Computer
• The data, which is represented in a discrete manner, is
called as digital data.
• The computer, which works on this type of data, is
called as Digital Computer.
Examples:- Laptop, calculators etc.

8. • Digital computer are of 4 types, On the basis
of size, speed and cost there are:-
1) Micro computer
2) Mini computer
3) Mainframe computer
4) Super computer

9. Microcomputer
• Size is minimum and it uses microprocessor.
• Also known as personal computer.
• These are mainly used in home, funs, game, business,
schools etc.

11. Minicomputer
• These are known as midrange computers.
• The minicomputers are general-purpose computers.
• Super minis are powerful minicomputers.

13. Mainframe Computers
• These are the large-size computers, which occupy a large
air-conditioned room full space and memory.
• It can process several million-program instructions per
second.
• Insurance companies, banks, airline and railway
reservation system etc mainly use mainframes.

15. Super Computer
• Super computers are the fastest calculating devices.
• Super computer can operate at a speed measured in nano
seconds and Pico seconds.
• They are used for many scientific and technical
applications, including weather fore casting and
automotive design and realistic graphics seen in movie
special effects.

17. Hybrid computer
The computer or device, which exhibit the feature of
both analog and digital computer is known as Hybrid
Computer.
Examples:- this type of computer use in hospitals to
measure the heartbeat of the patient or petrol pump
and ATM.