History of computer. Computer Generations.

1. Charles Babbage
1822 - The Difference Engine
1991
Reproduction
of the
Difference
Engine
Babbage invented a mechanical "difference engine" for the
calculation of arithmetical functions and set out plans for an
"analytical engine" whose operation would have included
logarithmic and trigonometric functions as well.

2. Mark I
The Mark 1 is seen as the first full-sized digital
computer. It weighed 5 tons, had 500 miles of
wiring, was used only for numeric calculations,
and took three seconds to carry out one
multiplication computation.
Mark 1 - 1944

3. 1st Generation
of Computers
Vacuum Tubes

4. ENIAC
1945

5. ENIAC could add, subtract, multiply, divide, and
extract square roots. ENIAC stored a maximum of
twenty 10-digit decimal numbers. Its accumulators
combined the functions of an adding machine and
storage unit. It contained 20,000 vacuum tubes.

6. IBM SSEC
1947

7. UNIVAC
•1951
A Later modification of the
UNIVAC was the first
computer to make use of
transistors instead of
vacuum tubes.

8. IBM 702
1955

9. From Vacuum Tubes to Transistors
• 1959-1964
2nd Generation of
Computers

10. IBM 1401

11. 3rd Generation of Computers
1964-1975
Integrated Circuits

12. Digital PDP
Programmed Data
Processor

13. Circuitry encased in chips
Computers produce
less heat and run
many programs
with a central
program to
coordinate the
computer’s
memory and
components.

14. 1971 – The First Microprocessor
• Intel 4004 dubbed “a computer on a chip”

15. 1972 - Pong

16. 1973 - Large scale integration
10,000 components are placed on a 1cm2
chip
The 1975 Altair (kit) used large scale integration

17. 4th Generation of Computers
Mid – 1970’s – Current
Large-Scale Integration

18. 1976 CRAY I

19. 1977 – Apple II

20. 1977 – Tandy
Commodore
Radio
Shack
TRS - 80

21. 1977 – Cellphones

22. 1984 – Apple MacIntosh

23. 1984 – CD ROM

24. 1985 – Windows 1.0

25. 1993 – Intel Pentium
• 3.5 million transistors

26. 1996 – Windows CE

27. Fifth Generation
Voice Recognition
Artificial Intelligence

28. THANK YOU