CS 320 Unit 4 Review of Integrated Circuits

CS 320 Unit 4 Review of Integrated Circuits - CS 320...

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CS 320 Computer Architecture Unit 4 Review of Integrated Circuits Furman Haddix, Ph.D. Assistant Professor Minnesota State University, Mankato Spring 2008
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Unit 4 Review of Integrated Circuits Objectives How the Principal Components of the Data Path Work Integrated Circuits Multiplexor, Demultiplexor, Decoder, PLA Arithmetic Circuits Shifter, Half-adder, Adder, ALU Tanenbaum, Chapter 3
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Integrated Circuits SSI (Small Scale Integrated Circuit): 1-10 gates MSI (Medium Scale Integrated Circuit): 10-100 gates LSI (Large Scale Integrated Circuit): 100- 100,000 gates VLSI (Very Large Scale Integrated Circuit): 100,000-100,000,000 (approximately) gates 10,000,000 Transistors 4,000,000 Gates (approximately)
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An SSI chip containing ? transistors An SSI chip containing 8 transistors
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Multiplexor 3 Boolean control inputs 2 3 = 8 possibilities Control inputs determine which data input is used for output 8 data inputs One of these becomes the output 1 data output Equal to the selected data input
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Function Table for Eight-input Multiplexor A B C D 0 D 1 D 2 D 3 D 4 D 5 D 6 D 7 F 0 0 0 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 0 0 0 1 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 1 0 1 0 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 2 0 1 1 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 3 1 0 0 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 4 1 0 1 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 5 1 1 0 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 6 1 1 1 V 0 V 1 V 2 V 3 V 4 V 5 V 6 V 7 V 7
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= 1 = 0
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Demultiplexor 3 Boolean control inputs 2 3 = 8 possibilities Control inputs determine which data output receives the data input 1 data input Selected output receives this value 8 data outputs The selected output is equal to the data input
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An Eight-output Demultiplexor F 0 F 1 F 2 F 3 F 4 F 5 D F 0 F 1 F 2 F 3 F 4 F 5
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Function Table for Eight-output Demultiplexor In a simple multiplexor, one data line => V is 0 or 1. In a more complex multiplexor, D stands for multiple data lines, and V can represent many more values. (see next slide) A B C D F 0 F 1 F 2 F 3 F 4 F 5 F 6 F 7 0 0 0 V V 0 0 0 0 0 0 0 0 0 1 V 0 V 0 0 0 0 0 0 0 1 0 V 0 0 V 0 0 0 0 0 0 1 1 V 0 0 0 V 0 0 0 0 1 0 0 V 0 0 0 0 V 0 0 0 1 0 1 V 0 0 0 0 0 V 0 0 1 1 0 V 0 0 0 0 0 0 V 0 1 1 1 V 0 0 0 0 0 0 0 V
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This note was uploaded on 06/09/2008 for the course CS 320 taught by Professor Furmanhaddix during the Spring '08 term at Minnesota State University, Mankato.

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CS 320 Unit 4 Review of Integrated Circuits - CS 320...

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