Computer Revolution
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Transcript of Computer Revolution
3
Early Calculating Machines
• Stepped reckoner• Textile industry – Jacquard Loom• Difference engine
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Early Calculating Machines through those of today
• Analytical engine• The 1890 Census machine• ENIAC
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1st Generation 1945-1959
• Made to order operating instructions
• Different binary coded programs told it how to operate
• Difficult to program and limited versatility and speed
• Vacuum tubes• Magnetic drum storage
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2nd Generation 1959-1963
• Transistors• Memory – magnetic core• Assembly language• Printers and memory• Programming languages• Careers
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4th Generation 1971 – 1984
• LSI – Large Scale Integration• VLSI – Very Large Scale
Integration• Chip• General consumer usage• Networks
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6th Generation 1990 – now
• This is the future• What new advancements lie
ahead?• What changes will be big enough
to create this new generation?
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Important Machines
• IBM 650 introduced in 1953• IBM 7090 first 2nd Generation computer• Texas Instruments and Fairchild
semiconductor both announce the integrated circuit in 1959
• DEC PDP 8 the first microcomputer sold for $18,000 in 1963
• IBM 360 introduced in 1964, used integrated circuits
• 1968 Intel is established by Robert Noyce, Grove, and Moore
• 1970 floppy disk introduced
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Important Machines
• 1972 – Intel’s 8008 and 8080• 1972 – DEC PDP 11/45• 1976 – Jobs and Wozniak build the Apple I• 1978 – DEC VAX 11/780• 1979 – Motorolla 68000• 1981 – IBM PC• 1982 – Compaq IBM-compatible PC• 1984 – Sony and Phillips CD-ROM• 1988 – Next computer by Steve Jobs• 1992 – DEC 64-bit RISC alpha• 1993 – Intel’s Pentium
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Wirth’s Law
• The software gets slower faster than the hardware gets faster
• What does this mean?
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References
Computer Lawshttp://www.sysprog.net/quotlaws.html