Third Generation of Computer


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Third Generation of mordern computer (1965 - 1974)

The period of third generation was 1965-1974.In this generation silicon transistors replaced germanium transistors. Integrated circuits were developed by interconnecting transistors, resistors and capacitors grown on a single chip of silicon. Integrated Circuit (IC) chips were used in computers. ICs were small in size, less power consuming and less expensive than the previous switching technology. Advances in storage technologies resulted in creating large capacity magnetic ,disks and tapes and large magnetic core based random access memory.
On software front, high level languages were improved. Fortran IV and optimising Fortran compilers were developed. Standardisation of COBOL (COBOL 68) was another major development during this period.

Third Generation of Computer Image



Advantages of Third Generatin of Computer:
» Smaller in size as compared to previous generations.
» More reliable as compared to previous generations.
» Used less energy as compared to previous generations.
» Produced less heat as compared to the previous two generations of computers.
» Maintenance cost was low because hardware failure is reare.
» Better speed and could calculate data in nanoseconds.
» Totally general purpose
» Good storage
» Could be used for high-level languages.
» Less expensive and Better accuracy
» Commercial production increased.
» Used mouse and keyboard for input.


Disadvantages of First Generatin of Computer:
» Air conditioning was required.
» Highly sophisticated technology required for the manufacturing of IC chips.
» Tactile sensitivity is decreased


Example of Third Generation of Computer:

1. IBM 360/370
2. CDC 6600
3. Honeywell-6000 series
4. PDP(Personal Data Processor)
5. TDC-316
6. IBM-370/168




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