Page 109 - DCAP108_DIGITAL_CIRCUITS_AND_LOGIC_DESIGNS

Digital Circuits and Logic Design

Notes
1. Draw the circuit diagram and truth table of Code Converters.

2. Prepare a truth table of four-bit comparator circuit.

6.7 Review Questions

1. Describe the multiplexer. And write 2 to 1 truth table.
2. Describe the demultiplexer.
3. Implement the function by using a 4-to-1 multiplexer and as few other gates as possible.
Assume that only the uncomplemented inputs w1, w2, w3, and w4 are available.
f(w , w , w , w ) = w www + ww + ww + ww + ww w
1 2 3 4 12 4 5 12 13 14 3 4 5
4. Describe the Shannon’s expansion for multiplexer.
5. Explain and draw the circuit diagram a 4-to-1 multiplexer.
6. What do you understand by A 2 × 2 crossbar switch?
7. Define Claude Shannon truth table.
8. Explain the Boolean expression of 4 Channel Demultiplexer using Logic Gates.
9. Discuss the BCD-to-7-segment decoder.

10. Write the truth table of four-bit comparator circuit.
Answers to Self Assessment

1. (c) 2. (d) 3. (a) 4. (d) 5. (c)
6. (d) 7. (b)

6.8 Further Readings

Digital Fundamentals—Prentice-Hall, Ninth Edition, by Floyd Thomas L.

Digital Electronics—Principles and Applications Tata McGraw Hill, 1999,
by Tokheim R.L.

http://www.ariese.articlealley.com/combinational-circuit-design-165328.
html

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