10-04-2017, 09:22 PM
ABSTRACT
Over the past four decades the computer industry has experienced four generations of development. The first generation used Vacuum Tubes (1940 1950s) to discrete diodes to transistors (1950 1960s), to small and medium scale integrated circuits (1960 1970s) and to very large scale integrated devices (1970s and beyond). Increases in device speed and reliability and reduction in hardware cost and physical size have greatly enhanced computer performance. The relationships between data, information, knowledge and intelligence are demonstrated. Parallel processing demands concurrent execution of many programs in a computer. The highest level of parallel processing is conducted among multiple jobs through multiprogramming, time sharing and multiprocessing
for more information about Evolution of Computer Systems please follow the link:http://b-u.acsde_book/advance_compu.pdf