Second Generation Of
Computers
(Transistors)
Introduction
From 1959-1965.
Introduction of transistors.
Inclusion of Magnetic Cores.
Fortran and Cobol as assembly and high
level programing language were used.
Develop for Atomic Energy Industry.
Advantages
- Smaller in Size.
- More reliable.
- Used less energy and were not heated.
- Better portability.
- Better speed and could calculate data in
microseconds.
Advantages
- Wider commercial use.
- Used faster peripherals
magnetic disks, etc.
like
drives,
- Used assembly and machine language.
- Accuracy improved.
Disadvantages
- Cooling system was required.
- Constant maintenance.
- Commercial production was difficult.
Disadvantages
- Only used for specific purposes.
- Costly and not versatile.
- Push cards were used for input.
Notable Persons
John Bardeen (1908 – 1991)
William B. Shockley (1910- 1989)
Walter H. Brattain (1902 – 1987)
Invented Transistors at Bell Laboratories in
the mid 1940’s
Examples
IBM 1620
Examples
IBM 7094
Examples
CDC 3600
Examples
UNIVAC 1108
Thank you!