The third generation computers were developed during 1966-1973. The examples are – IBM 1620, IBM 1401, and CDC 3600. G) Magnetic tapes were used as secondary storage media. However some of the features are as follows-ī) They were smaller, faster and cheaper than first generation of computer.Ĭ) They consumed less electrical power than first generation.ĭ) The operating speed was measured in microseconds.Į) They were more reliable and accurate than the first generation computers.į) They could understand high level language such as COBOL. The invention of the transistor by three scientists of Bell Telephone Laboratories in 1947 greatly changed the development of computers. The second generation computers were developed during 1959-1965.
The examples are- UNIVAC, ENIAC, EDSAC, EDVAC, and UNIVAC. G) They used machine level programming language. However some of the features are as follows-Ī) They were extremely large and occupied a very large space.ī) They used vacuum tubes as memory device.Ĭ) They were very expensive and consumed a lot of electrical power.ĭ) The operating speed was measured in milliseconds.Į) These computers had low level of accuracy and reliability.į) Storage capacity was too small only 1 to 4Kb. It used vacuum tubes as the active electronic components and was therefore very large. The first generation computers were developed during 1943-1958.
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