Fundamentals of Computer Processing

Computing History

•ENIAC - 1946

•UNIVAC I

•First sold in 1956 to Census Bureau

•IBM System 360 Line of Computers

•1960’s

•Revolutionized computing

•1954 -- first computer installed in a business (another UNIVAC I at GE)

•Early 1970s -- minicomputers

•Late 1970s -- microcomputers (TRS-80, Commodore PET)

•IBM PC

•1982

Computer Sizes

•Mainframes

•Large

•Centrally located

•Used by large organizations

•Minicomputers

•Mid-sized

•Today’s server market descended from these machines

Computer Sizes [cont.]

•Microcomputers

•Made possible by microprocessor

•PC -- used by one person, or by a few people in the same area