The document provides an overview of computers, including their definition, advantages, disadvantages, components, and history of development. It details the evolution of computers through five generations, from early mechanical calculators to modern advancements in artificial intelligence. The content highlights the significance of both hardware and software in computing and anticipates future technological advancements.

1. Introduction to Computer
Er. Sohan Grover
IT-Trainer

2.  What is Computer ?

3.  Computer is an Electronic Machine that Receive
the instruction to the Existing user and process
it and finally give the output according to the
user need.
 Computer is an electronic device that process,
stores and outputs data at high speeds.

4.  What is electronics machine???
 What is electrical machine???
What is the difference between electronics
and electrical machine????

5. Basic advantage of a computer
1. Speed
2. Multitask
3. Save time
4. Accuracy

6. Disadvantages of a Computer ??
1. Decision
2. Validation
3. Maintenance
4. Misuse

7.  Components of computer???

8.  Hardware
 The physical components of the computer
which are located inside the cabinet.

9. Major Components of computer Hardware :
1. Input Devices
2. Output Devices
3. Processing Unit

10. An INPUT DEVICE
lets you TALK TO the
computer

11. An OUTPUT DEVICE
lets the computer
TALK TO you

12. The CPU
(Central Processing Unit)
is the brain of a computer
– it tells the other parts
what to do

13. The CPU Stand for the..
Central Processing Unit

15. ALU
(Arithmetic & Logical Unit)
MU
(Memory Unit)
CU
Control Unit
Parts of CPU

17. The RAM
(Random Access Memory)
is the temporary memory
of a computer

18. The ROM
(Read Only Memory)
is the permanent memory
of a computer

19. What is Computer Software?
Software is the combination of different types
of instruction that made for perform a specific
task .
Computer Software are programs that tell the
computer what to do.

22. World first calculation machine
World first calculation machine
 The Abacus ( 1623 )
◦ The first computing aid that were used to help
them in their computation. (John Napier )

23. Pascal calculation machine
(1642)
Only (+,-)

24.  The Difference Engine
◦ An automatic, mechanical calculator designed to
tabulate polynomial functions.
◦ By 1822 the English mathematician Charles Babbage
who is considered as Father of the Computer today
was proposing a steam driven calculating machine the
size of a room

25.  Ada Agusta (first worlds programmer)
 Embedded at Difference Engine
 1890 America scientist Harman hollyrath
 Create a machine those are used in america
people calculation.
 1939 atanasof and berry made first world
electronic digital computer (ABC computer )

26.  1946 America scientist JP Eckert and John
Markel Made world first computer ENIAC
 1954 (General electronics corporation )UNIVAC

27. EVOLUTION OF COMPUTERS
GENERATION 1 GENERATION 2 GENERATION 3
GENERATION 4 GENERATION 5

28. FIRST GENERATION COMPUTERS
1. Use of vacuum tubes
2. Big & Clumsy
3. High Electricity
Consumption
4. Programming in
Mechanical Language
5. Larger AC were needed
6. Lot of electricity
failure occurred

29. SECOND GENERATION COMPUTERS
1. Transistors were used
2. Core Memory was
developed
3. Faster than First
Generation computers
4. First Operating System
was developed
5. Programming was in
Machine Language &
Assembly Language
6. Magnetic tapes & discs
were used
7. Computers became
smaller in size than the
First Generation computers
8. Computers consumed less
heat & consumed less
electricity

30. THIRD GENERATION COMPUTERS
1. Integrated circuits
developed
2. Power
consumption was
low
3. SSI & MSI
Technology was
used
4. High level
languages were used

31. FOURTH GENERATION COMPUTERS
1. LSI & VLSI Technology
used
2. Development of
Portable Computers
3. RAID Technology of
data storage
4. Used in virtual reality,
multimedia, simulation
5. Computers started in
use for Data
Communication
6. Different types of
memories with very high
accessing speed & storage
capacity

32. FIFTH GENERATION COMPUTERS
1. Used in parallel
processing
2. Uses
superconductors
3. Used in speech
recognition
4. Used in
intelligent robots
5. Used in artificial
intelligence

33. The future promises advanced
technology in computing. Faster, smarter
and more affordable.

34. THE END
ER. SOHAN SINGH GROVER
IT - TRAINER
Thank you
dear
students