ECON 1900 Study Guide - Drum Memory, Punched Card, 18 Months
14 May 2014
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Document Summary
Memory device was magnetic drum that rotates under a read write head. Output device was a punched card line printer. Used magnetic tapes to store information: second generation. Immediate access memory was invented with magnetic core that were strung together. Magnetic disk: unlike a tape you can access the data immediately without going through all the data, third generation. Integrated circuits: the number of circuits that are able to be put on a single integrated circuit was doubling every year known as moore"s law. Moore"s law modified to doubling every 18 months. Again moore"s law modified to say computers will double in power at the same price every 18 months or halve in price for the same power every. Statistical package for the social sciences (spss) When the computer started managing itself rather than the operator doing that job: fourth gen. User applications like spread sheets, word processing, database management: fifth generation.
