This document classifies computers based on technology into three categories: analog computers, digital computers, and hybrid computers. It then further classifies digital computers based on general purpose into mainframe computers, mini computers, micro computers, and super computers. Analog computers represent numbers through physical properties like length or voltage, while digital computers use discrete values. Hybrid computers combine features of analog and digital computers, having the speed of analog and precision of digital.

1. Subject:- Information Technology.
CSA-CC-121
Topic:-Classification of computer
Presented To:-
Dr. Kamal Kant Ahirwar.
Presented BY:-
Vishal Singh.
Y18271026
(MCA : 1st Sem.)

3. CLASSIFICATION OF COMPUTER
BASED ON TECHNOLOGY
 ANALOG COMPUTER
 DIGITAL COMPUTER
 HYBRID COMPUTER

4. ANALOG COMPUTER
This type of computer represents number by a physical quantity that is they
assign numeric values by physically measuring some actual property, such as the
length of an object, an angle created by two lines or the amount of voltage
passing through a point in an electric circuit.
Analog computer derive all their data from some of measurement.
Though effective for some applications this method of representing number is a
limitations of the analog computer.
The accuracy of the data used in an analog computer is directly related to the
precision of its measurement

5. DIGITAL COMPUTER
Hybrid computer combine the most desirable feature of
both analog and digital computer.
They have the speed of analog computer and the accuracy
of digital computer.
They usually used the special problems in which input data
derived from measurements is converted in to digits and
processed by computers.

6. HYBRID COMPUTER
 Hybrid computer combine the most desirable feature of
both analog and digital computer.
They have the speed of Analog Computer and the accuracy
of Digital Computer.
They usually used the special problems in which input
data derived from measurements is converted in to digits and
processed by computers.

7. ON THE BASIS OF GENERAL
PURPOSE DIGITAL COMPUTER
ARE CLASSIFIED AS
 Main frame Computer
 Mini Computer
Micro Computer
Super Computer

8. MAIN FRAME COMPUTER
Faster than mini computer and have larger memory used in CPU intensive or
I/O intensive job, like .
 in scientific and business applications and to process high volume of data in
large business applications..
Example-ibm-370 and ibm-s/390, dec vax-8800, cpc-7600, univac-111

9. MINI COMPUTER
Relatively faster and low cost compared to mainframes, higher than
pcs.
Design for real time dedicated multi user applications.
Example-ibm-17, hp-3000 decpdp-11

10. MICRO COMPUTER
Slow, cheap significant computing power.
 Use of intel chips. Single processor system which can
supports the simple tasks like WP,ESS,DBMS etc
Example-ps 386, 486 PENTIUM (P-1, 2 ,3, 4]

11. SUPER COMPUTER
 Large in size and large memory compared to all other computers.
Ideal for high end computing applications involving large volume of data and intensive
computing useintel chips.
These computers are design for ultra high performance tasks such as encryption, cracking,
creation of animation and for designing all knowledge based systems.
 Example- ibms deep blue, cdc cyber family and cray x-mp/26

12. REFRENCE
Internet
 IT books