Lecture_8 - Flip-flops, counting measurements cross-coupled...

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1 Flip-flops, counting measurements CHM6158C - Lecture 8 cross-coupled gates flip-flops counters
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2 Previous lecture FALSE = 0 = low voltage (0-2 V) TRUE = 1= high voltage (3-5 V) Logic gates: Recall truth tables for both of these logic symbols
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3 Cross-coupled NOR gates Cross-coupled NOR gates What is the resulting truth table? RSQ ( n e g ) Q 0010 0001 0110 1001 11 00 Q = not Q BAD
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4 Cross-coupled NAND gates What is the resulting truth table? RSQ ( n e g ) Q 0011 0110 1001 1101 1110 BAD
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5 RS flip-flops Sequential logic gate Re-set Set Leave values unchanged Set values Re-set values Bad Coupled NOR gates
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6 J-K flip-flop No unpredictable output for J=1 and K=1 Toggle trigger When J = K = 1, toggle is activated to
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This note was uploaded on 07/30/2011 for the course CHM 6158 taught by Professor Polfer during the Spring '11 term at University of Florida.

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Lecture_8 - Flip-flops, counting measurements cross-coupled...

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