Combinational Logic Circuits - General Question (2)

Directions to Solve

Combinational Logic Circuits - General Questions

Solve the network in the figure given below for X.

mcq4_1009_

A.	A + BC + D
B.	((A + B)C) + D
C.	D(A + B + C)
D.	(AC + BC)D

Answer: Option B

Explanation:

No answer description available for this question

10.

A certain BCD-to-decimal decoder has active-HIGH inputs and active-LOW outputs. Which output goes LOW when the inputs are 1001?

A.	0
B.	3
C.	9
D.	None. All outputs are HIGH.

Answer: Option C

Explanation:

No answer description available for this question

11.

For a two-input XNOR gate, with the input waveforms as shown below, which output waveform is correct?

mcq4_1011_

A.	a
B.	b
C.	c
D.	d

Answer: Option D

Explanation:

No answer description available for this question

12.

Which statement below best describes a Karnaugh map?

A.	A Karnaugh map can be used to replace Boolean rules.
B.	The Karnaugh map eliminates the need for using NAND and NOR gates.
C.	Variable complements can be eliminated by using Karnaugh maps.
D.	Karnaugh maps provide a visual approach to simplifying Boolean expressions.

Answer: Option D

Explanation:

No answer description available for this question

13.

How many 4-bit parallel adders would be required to add two binary numbers each representing decimal numbers up through 300₁₀?

A.	1
B.	2
C.	3
D.	4

Answer: Option C

Explanation:

No answer description available for this question

14.

A decoder can be used as a demultiplexer by ________.

A.	tying all enable pins LOW
B.	tying all data-select lines LOW
C.	tying all data-select lines HIGH
D.	using the input lines for data selection and an enable line for data input

Answer: Option D

Explanation:

No answer description available for this question

15.

Which of the K-maps given below represents the expression X = AC + BC + B?

mcq4_1015_

A.	a
B.	b
C.	c
D.	d

Answer: Option C

Explanation:

No answer description available for this question

16.

The carry propagation can be expressed as ________.

A.	Cp = AB
B.	Cp = A + B
C.
D.

Answer: Option B

Explanation:

No answer description available for this question.

Combinational Logic Circuits - General Question (2)

Combinational Logic Circuits - General Questions

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