SHRI VISHNU ENGINEERING COLLEGE FOR …

SHRI VISHNU ENGINEERING COLLEGE FOR WOMEN::BHIMAVARAM DEPARTMENT OF INFORMATION TECHNOLOGY Computer Organization and Architecture Lecture Notes UNIT-1 DEPARTMENT OF INFORMATION TECHNOLOGY::SVECW Page 1 UNIT-1 A BRIEF HISTORY OF COMPUERS: We begin our study of computers with a brief history. First Generation: Vacuum Tubes ENIAC The ENIAC (Electronic Numerical Integrator And Computer), designed and constructed at the University of Pennsylvania, was the world s first general-purpose electronic digital computer. The project was a response to needs during World War II. John Mauchly, a professor of electrical ENGINEERING at the University of Pennsylvania, and John Eckert, one of his graduate students, proposed to build a general-purpose computer using vacuum tubes for the BRL s application.

IBM SYSTEM/360 By 1964, IBM had a firm grip on the computer market with its 7000 series of machines. In that year, IBM announced the System/360, a new family of computer products. DEC PDP-8 In the same year that IBM shipped its first System/360, another momentous first shipment occurred: PDP-8 from Digital Equipment Corporation (DEC).At a time ...

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