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COMPSCI 210 Semester 1- 2015 Tutorial 3: Latches & Exercises from Ch3

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Latches The SR Latch (NOR) – Consider the following circuit S R Q Q R S Q Q Circuit Symbol Function Table RSQ n+1 0 Q n (HOLD) 011 100 11? Q Q S R n+1 represents output at some future time n represents current output. 2

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Latches The SR Latch(NAND) – NAND Form produces similar result from inverted inputs Q Q Q Q Circuit Symbol Function Table RSQ n+1 00? 010 101 11Q n R S R S Q Q R S You ought to be able to figure this one out yourself! 3

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Exercise 3.43.a Solution 5

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Exercise 3.43.b Solution 6

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Exercise 3.44 Solution 8

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