This document summarizes the five generations of computers based on changes in technology. The first generation used vacuum tubes and were very large and expensive. The second generation used transistors and were smaller and cheaper than the first. The third generation used integrated circuits which made computers even smaller and less expensive. The fourth generation used microprocessors and VLSI circuits, allowing for the development of personal computers. The fifth generation uses ULSI technology and has led to true artificial intelligence and highly portable devices like laptops and tablets.

1. AFFILIATED BY APS UNIVERSITY

2. A Presentation
On
GENERATIONS OF COMPUTER

3. Generations of Computer
Generation in computer terminology is
a change in technology a computer
was being used.

4. Computer can be classified into
Five Generations
First
Generation
(1942-1954)
Fourth
Generation
(1971-1990)
Third
Generation
(1964-1971)
Second
Generation
(1954-1964)
Fifth
Generation
(1990- Till
Date

5. Its Generation(1942-1954):
First generation of computer started
with using vacuum tubes as the basic
components for memory and circuitry
for CPU(Central Processing Unit).

6. Features of First Generation
1) Vacuum Tube technology
2) Supported Machine language.
3) Huge size.
4) Very costly.
5) Generate lot of heat.
6) Need of A.C.
7) Internal Memory.
Ex: Mark1, Univac1.

7. IInd Generation (1954-1964):
This generation using the transistor were cheaper,
consumed less power, more compact in size, faster
than the first generation machines made of vacuum
tubes.
In this generation, magnetic cores were used as
primary memory and magnetic tape and magnetic
disks as secondary storage devices.

8. Features of Second Generation
1) Use of transistors
2) Still very costly.
3) A.C. needed.
4) Language
5) Smaller size as compared to first
generation computers.
6) Generate less heat as compared
to first generation computers.
7) Faster than first generation
computers.
Ex:- IBM 1620, IBM 7094,
CDC 1604

9. IIIrd Generation(1964-1971):-
The third generation of computer is marked
by the use of Integrated Circuits (IC's) in
place of transistors. A single I.C. has many
transistors, resistors and capacitors along
with the associated circuitry.
The I.C was invented by Jack Kilby.

10. Features of Third Generation
1) Operating system.
2) Use of I.C.
3) Smaller size.
4) Generate less heat.
5) Support high level language.
6) Still costly.
7) A.C. needed.
Ex:- IBM-360 series,
TDC-316.

11. IVth Generation (1971-1990)
The fourth generation of computers is
marked by the use of Very Large Scale
Integrated (VLSI) circuits. VLSI circuits
having about 5000 transistors and
other circuit elements and their
associated circuits on a single chip
made it possible to have
microcomputers of fourth generation.
Microprocessor

12. The main features of Fourth
Generation are:
1) VLSI technology used.
2) Operating Systems.
3) Use of PC's.
4) Very small size.
5) Languages.
6) Concept of internet To introduce.
7) Memory.
Ex:- DEC 10, STAR 1000,
PDP 11

13. Vth Generation (1990-Till Date):-
In the fifth generation, the VLSI technology
became ULSI (Ultra Large Scale
Integration) technology, resulting in the
production of microprocessor chips having
ten million electronic components.

14. Main Feature of Fifth
Generation are:
1) ULSI technology.
2) Development of true artificial
intelligence.
3) New Application.
4) More user friendly interfaces
with multimedia features.
Ex:- Desktop, Laptop, Note
Book, Ultra Book.

15. Presented By:-
ANAND KUSHWAHA
B.C.A. Ist Sem.

16. From Uploaded by
Pentium point technical college college Rewa Madhay Pradesh.
Contact to:- anandkushwaha064@gmail.com
Or
8717920862