Problem 3. Consider the following sequential circuit: clk A(t) Q B(t) D Q where x is a Boolean input variable; and A and B are output of the D flip-flops. (a) Complete the following state transition table: B«-1) BO

Problem 3. Consider the following sequential circuit: clk A(t) Q B(t) D Q where x is a Boolean input variable; and A and B are output of the D flip-flops. (a) Complete the following state transition table: B«-1) BO

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

Problem 3. Consider the following sequential circuit:
clk
Do
A(t)
Q
B(t)
D
Q
where x is a Boolean input variable; and A and B are output of the D flip-flops.
(a) Complete the following state transition table:
Ą(-1)
B-1)
(b) Assume zero propagation delay. Fill-in the timing diagram:
clk
A
(c) Explain what this system does. Specifically, what does it do when x= 0 and x = 1?

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