cp-1_lect-9 - Use of Decoder and MUX A 4X3 Memory 1 M emor...

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Unformatted text preview: 5/10/10 Use of Decoder and MUX: A 4X3 Memory 1 M emor y r ead 1 1 1 1 M emor y wr ite 1 1 5/10/10 The Electronic Era 1943: ENIAC Presper Eckert and John Mauchly -- first electronic computer. Hard-wired program -- settings of dials and switches ( no internal memory ). I t was 10 feet tall, occupied 1,000 squar e feet of floor - space, weighed in at appr oximately 30 tons, and used mor e than 70,000 r esistor s, 10,000 capacitor s, 6,000 switches, and 18,000 Aimed for trajectory calculations of artillery during WW-II. Later used for design of hydrogen bomb, weather prediction, cosmic-ray 5/10/10 The Electronic Era Continued 1944: EDVAC (electronic discrete variable automatic computer) Vast improvement upon ENIAC Program was stored inside the computer Mercury tubes for storing 0s and 1s Used binary numbers rather than decimal 5/10/10 Von Neumann Model ME MO RY CONT ROL UNI T MA R MD R IR PROC ESSI NG UNI T ALU TEMP PC OUT PUT Moni tor Printer LED Disk INPUT Keyboard Mous e Scanner Disk The Stored Program Compute 5/10/10 John von Neumann & EDVAC 5/10/10...
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cp-1_lect-9 - Use of Decoder and MUX A 4X3 Memory 1 M emor...

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