Question

Compare 1st and 3rd generation of computer

Answer 1

Answer:

1st generation

• They were extremely large and occupied a very large space.
• They used vacuum tubes as memory device.
• They were very expensive and consumed a lot of electrical power.
• The operating speed was measured in milliseconds.
• These computers had low level of accuracy and reliability.
• Storage capacity was too small only 1 to 4Kb.
• They used machine level programming language.

Examples- UNIVAC, ENIAC, EDSAC, EDVAC, and UNIVAC.

3rd generation

• These computers used integrated circuits.
• They were small, efficient and reliable.
• Operating systems were developed.
• Monitors and keyboards were introduced for input and output of data.
• Magnetic disks were used for secondary storage.
• The operating speed was measured in nano seconds.
• They could understand large number of high level languages.

Examples– IBM 360, ICL -1900, and IBM 370 etc.

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