chapter 2 Introduction to sequential circuit

1. By
Mr. C.R.Shinde
Electrical Engineering Department
Matoshri College of Engineering & Research centre, Nashik

2. Unit 02: Design of sequential circuit.
M1:-Introduction to sequential circuit
M2:- Design of synchronous (K-map) and asynchronous counters.
M3:- Up-down counters
M4:-N modulo counters.
M5:- Shift registers.
M6:-Ring and twisted ring counters
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5. 1. Decide the number of flip-flops & Select Flip flops.
2. Prepare excitation table for flip-flops from TT.
3. Prepare excitation table for circuit.
4. Obtained simplified equation using k map.
5. Draw a logic diagram.
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6. Step 1:- Decide the number of flip-flops
Number of flip-flops depends on bit used for counter.
2bit counter = 2 flip –flops
3bit counter = 3 flip –flops
4bit counter = 4 flip –flops
Hence,
N-bit counter = N- flip –flops
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7. Step 2:-Prepare excitation table for flip-flops
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8. Step 2:-Prepare excitation table for flip-flops
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10. For
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0 1
0 1 ×
1 1 ×
= 1

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0 1
0 × 1
1 × 1
= 1
For

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0 1
0 1 0
1 × ×
=
For

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0 1
0 × ×
1 1 0
=
For

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16. Thank you
Mr. C. R. Shinde
Electrical Engineering Department
Matoshri College of Engineering & Research centre, Nashik
If you have any query, ask me anytime on…… … .. . . .
cshinde58@gmail.com
chandrakant.shinde@matoshri.edu.in
9970031353
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