This document classifies and describes different types of computers. It divides classification into two main categories: by data type (analog, digital, and hybrid computers) and by size (microcomputers, minicomputers, mainframe computers, and supercomputers). Analog computers process continuous data like temperature or weight. Digital computers use binary digits to represent all data. Hybrid computers measure analog quantities and convert them to digital for analysis. Classification by size ranges from personal microcomputers to large mainframe and supercomputers used for complex government, research, or industrial tasks.

1. 2.Classification of
Computers

2. 2.1 Classification of Computers based
on Data Type
The classification of computers depends upon the types
of jobs they perform.
2.1.1 Analog Computers
2.1.2 Digital Computers
2.1.3 Hybrid Computers

3. 2.1.1. Analog Computers
These computers are used to
measure the values (such as the
temperature, the pressure and
the weight…) which are of
continuous type and are
measured as charges take place
gradually.
The devices viz. Slide rule,
Wall clock, Speedometer,
Pressure gauge,
Thermometer, Weighting
machine, ECG machine are
considered as Analog
Computers

4. 2.1.2 Digital Computers
Digital Computers store data
and instructions in the form
of binary digits, i.e. 0 and 1.
These digits are used to
represent letters, symbols,
and numerals. The devices viz. Calculator,
Digital Watches, Digital
Thermometer are considered
as Digital Computers .

5. 2.1.3. Hybrid Computers
Hybrid Computers are the
combination of analog and
digital computers. These
computers measure the analog
quantities and then convert
them into digital signals for the
purpose of analysis.
Hybrid Computers are used
in hospitals to measure the
heartbeat of patient,
controlling industrial
processes, etc.

6. 2.2 Classification of Computers
based on Size
2.2.1 Micro Computers
2.2.2 Mini Computers
2.2.3 Mainframe Computers
2.2.4 Super Computers

7. 2.2.1 Micro Computers
A microcomputer is a
computer with a central
processing unit (CPU) as a
microprocessor. Designed
for individual use.

8. 2.2.1.1 Types of Micro Computers
Desktop Computer Notebook Computer
Tablet PC
Handheld

9. 2.2.2 Mini Computers
Mini Computers have operating system
with multitasking and network
capabilities enabling them to serve more
then one user. Medium-sized
companies or departments of large
companies typically use them for specific
purposes. For example, production
departments use minicomputers to
monitor certain manufacturing processes
and assembly-line operations.
Examples of Mini Computers
IBMAS/400/B60
HP 9000 series
WIPRO S -68030V

10. 2.2.3 Mainframe Computers
Mainframe computers are capable of
great processing speeds and data
storage. For example, insurance
companies use mainframes to process
information about millions of
policyholders. These are used for
government organizations, banks and
airline reservations etc.
Examples of Mainframe Computers
IBMA 9000 series
HP 9000 series Model 8705/400

11. 2.2.4 Super Computers
Supercomputers are the most powerful
type of computer. A super computer
contains a number of CPU’s, which
operate in parallel and make it faster.
They are used for massive data
processing & solving very sophisticated
problems like weather forecasting
weapons research and development,
rocket launching, seismology, atomic,
nuclear physics etc.
Examples of Super Computers
CRAY-X-MP/14
SX-2

12. Good Luck Students
Created by:
ABDUL KAYUM
Senior Teacher
Swami Vivekanand Govt. Model School,
Block- Parbatsar (Nagaur) 341512
E-mail: aqmansuri50@gmail.com