# #9 - EE200 DIGITAL LOGIC CIRCUIT DESIGN Class Notes CLASS...

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EE200(class 3-2) Prof. M.M. Dawoud 32 EE200 DIGITAL LOGIC CIRCUIT DESIGN Class Notes CLASS 4-3 The material covered in this class will be as follows: Digital logic gates Extension to multiple inputs Positive and negative logic Integrated circuits Digital Logic Gates Commonly used digital logic gates are given in the following table. Name Graphic Symbol Algebraic Function Truth Table AND x y F F = xy x y F 0 0 0 0 1 0 1 0 0 1 1 1 OR F F = x + y x y F 0 0 0 0 1 0 1 0 0 1 1 1 Inverter F = x ' x F 0 1 1 0 x F

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EE200(class 3-2) Prof. M.M. Dawoud 33 Buffer F = x x F 0 0 1 1 NAND x y F F = ( xy )' x y F 0 0 1 0 1 1 1 0 1 1 1 0 NOR F F = ( x + y )' x y F 0 0 1 0 1 0 1 0 0 1 1 0 XOR F F = xy ' + x ' y x y F 0 0 0 0 1 1 1 0 1 1 1 0 XNOR F F = xy + x ' y ' x y F 0 0 1 0 1 0 1 0 0 1 1 1 Extension to Multiple Inputs The commonly used gates, except the buffer and the inverter, can be extended to have more than two inputs if the binary operation is commutative and associative (e.g. AND, OR).
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## This note was uploaded on 05/21/2010 for the course EE EE200 taught by Professor Prof.ahmed during the Spring '09 term at King Fahd University of Petroleum & Minerals.

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#9 - EE200 DIGITAL LOGIC CIRCUIT DESIGN Class Notes CLASS...

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