A sequential circuit has one input X, one output Z, and three flip-flops Q1, Q2 and Q3. The transition and output tables for the circuit follow: Present Next State Output (Z) State X = 0 X = 1 X = 0 X = 1 000 100 101 1 001 100 101 1 010 00 000 1 011 000 000 1 100 111 110 1 101 110 110 1 110 011 010 1 111 011 011 1 (a) Construct a timing chart for the input sequence X = 0101 and initial state Q,Q¿Q3 = 000. Identify any false outputs. (Assume that the flip-flops are rising- edge triggered and that the input changes midway between the rising and falling edges of the clock.) (b) List the output values produced by the input sequence.

A sequential circuit has one input X, one output Z, and three flip-flops Q1, Q2 and Q3. The transition and output tables for the circuit follow: Present Next State Output (Z) State X = 0 X = 1 X = 0 X = 1 000 100 101 1 001 100 101 1 010 00 000 1 011 000 000 1 100 111 110 1 101 110 110 1 110 011 010 1 111 011 011 1 (a) Construct a timing chart for the input sequence X = 0101 and initial state Q,Q¿Q3 = 000. Identify any false outputs. (Assume that the flip-flops are rising- edge triggered and that the input changes midway between the rising and falling edges of the clock.) (b) List the output values produced by the input sequence.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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