This document classifies computers into several categories: digital computers use binary representation and numbers as discrete digits, while analog computers represent information continuously; hybrid computers have aspects of both. Computers are also classified by purpose as general purpose for varied uses or special purpose for specific tasks. Size-wise, computers range from embedded through programmable, laptops, PCs, workstations, mainframes, to supercomputers.

1. CLASSIFICATION
OF COMPUTERS
Presented By:
Jasbir Singh
17048445
BCA-1st sem

2. 1. Introduction
2. Types of computers
 Digital computers
 Analog computers
 Hybrid computers
3. Purpose Wise Classification
 Special purpose computers
 General purpose computers
4. Size wise classification
 Embedded computers
 Programmable computers
 Laptops or notebooks
 Personal computers
 Workstation
 Mainframes
 Super computers
INDE
X

3. INTRODUCTI
ON is
a
Computer
programmabl
e
machin
e.
The two principa
l
characteristic
s computer
of a
are: It
responds to a specific
set of instructions in a
well defined manner
and it
recorded list
can execute a
pre
of
instructions (a
program).

4. DIGITAL COMPUTERS
Most commonly used computers are
digital computers. They represent
data, whether numbers, letters, or
symbols, in binary form (i.e. ‘0’ and
‘1’) and they work with numbers in
the form of separate discrete digits.
ANALOG COMPUTERS
Analog is a Greek word that denotes
‘similar’. Analog computers use
continuous physical quantities like
pressure, temperature, length, voltage
etc. and convert them into numeric
values.

5. HYBRID COMPUTERS
Hybrid computers are computers that exhibit features of analog
computers and digital computers. The digital component
normally serves as the controller and provides logical and
numerical operations.

6. SPECIAL PURPOSE
COMPUTER is
designed only to meet the
requirements of a particular task or
application. It therefore doesn’t
posses unnecessary options and
is less expensive.
GENERAL PURPOSE
COMPUTERS
are designed to meet the needs of
many different applications. The
instructions needed to perform a
particular task are wired
permanently into the internal
memory.

7. SIZE WISE
CLASSIFICATION
1. EMBEDDED COMPUTERS
An embedded system is a computer system with a
dedicated function within a larger mechanical or
electrical system, often with real-time computing
constraints. It is embedded as part of a complete
device often including hardware and mechanical parts.

8. 2.
PROGRAMMABLE
COMPUTER
S
These computers are very small but bigger than embedded computers. The
main difference between programmable and embedded computers is that the
programmable computers can be programmed by users. Example: Personal
Digital Assistants ,Tablet PCs, Latest mobiles,etc.

9. 3. LAPTOPS AND
NOTEBOOKS
These computers are much
bigger than programmable
computers. These computers
are placed on your laps. They
are designed to mobility to
computer users.

10. 4. PERSONAL
COMPUTERS
A personal computer (PC) is a multi-
purpose computer whose size,
capabilities, and price make it
feasible for individual use. PCs are
intended to be operated directly by
an end user, rather than by a
computer expert or technician.
Computer time-sharing models that
were typically used with larger, more
expensive mini computer
and mainframe systems, to enable
them be used by many people at the
same time, are not used with PCs.

11. A workstation is a special computer designed for technical or scientific
applications. Intended primarily to be used by one person at a time, they are
commonly connected to a local area network and run multi user operating
systems. It has also been used loosely to refer to everything from a
mainframe computer terminal to a PC connected to a network .
5.
WORKSTATION

12. 6. MAINFRAMES
Mainframe computers are computers used primarily by large
organizations for critical applications, bulk data processing, such
as census, industry and consumer statistics, enterprise resource
planning, and transaction processing.

13. A supercomputer is a computer with a high level of computing
performance compared to a general-purpose computer.
Performance of a supercomputer is measured in floating-point
operations per second (FLOPS) instead of million instructions
per second (MIPS) .
7.
SUPERCOMPUTERS