A set-dominant flip-flop behaves like an SR flip-flop, except that the input S = R = 1 is allowed, and the flip-flop is set when S = R = 1. A resetdominant flip-flop is similar to the set-dominant flip-flop, except that the input S = R = 1 resets the flip-flop. (a) Derive the characteristic equation for a set-dominant flip-flop.(b) Show how a set-dominant flip-flop can be constructed by adding gate(s) to anSR flip-flop.(c) Derive the characteristic equation for a reset-dominant flip-flop.(d) Show how a reset-dominant flip-flop can be constructed by adding gate(s) toan SR flip-flop.

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A set-dominant flip-flop behaves like an SR flip-flop, except that the input S = R = 1 is allowed, and the flip-flop is set when S = R = 1. A resetdominant flip-flop is similar to the set-dominant flip-flop, except that the input S = R = 1 resets the flip-flop.

A set-dominant flip-flop behaves like an SR flip-flop, except that the input S = R = 1 is allowed, and the flip-flop is set when S = R = 1. A resetdominant flip-flop is similar to the set-dominant flip-flop, except that the input S = R = 1 resets the flip-flop.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter22: Sequence Control

Section: Chapter Questions

Problem 6SQ: Draw a symbol for a solid-state logic element AND.

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Concept explainers

Latches and Flip Flop

Just like logic gates, the latches and flip-flops are the important elements of an electronic circuit. The logic gates form the important part of combinatorial circuits, while the latches and flip-flops form the essential part of a sequential circuit. Sequential circuits form the important concept of automata theory in electronics and electrical engineering, these circuits are a kind of logic circuit whose output depends on both present input and past inputs, that is, the input history.

Question

(a) Derive the characteristic equation for a set-dominant flip-flop.
(b) Show how a set-dominant flip-flop can be constructed by adding gate(s) to an
SR flip-flop.
(c) Derive the characteristic equation for a reset-dominant flip-flop.
(d) Show how a reset-dominant flip-flop can be constructed by adding gate(s) to
an SR flip-flop.

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