Design Moore sequence detector to detect a sequence ----101-using DF/F

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Design Moore sequence detector to detect a sequence ----101-using DF/F

written 8.3 years ago by

teamques10 ★ 67k

modified 2.7 years ago by

sagarkolekar ★ 11k

digital circuits and design

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2 Answers

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written 8.3 years ago by

teamques10 ★ 67k

A sequence detector is a sequential state machine. In a Moore machine, output depends only on the present state and not dependent on the input (x). Hence in the diagram, the output is written with the states.
The state diagram of a moore machine for a 101 detector is:

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The state table for the above diagram:

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Four states will require two flip flops. Consider two D flip flops. Their excitation table is shown below.
Excitation table:

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K-maps to determine inputs to D Flip flop:

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Circuit diagram for the sequence detector:

enter image description here

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This can be done with lesser no of states. Three states .Please see to this if possible.

7.4 years ago by teamques10 ★ 67k

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written 2.9 years ago by

teamques10 ★ 67k

Equation for DB is supposed to be x'A +xBA' instead of xBA, the diagram needs adjustment too

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