Explore topic-wise MCQs in Digital Circuits.

This section includes 24 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Circuits knowledge and support exam preparation. Choose a topic below to get started.

1.

TTL 74LS85 is a _____________

A. 1-bit digital comparator
B. 4-bit magnitude comparator
C. 8-bit magnitude comparator
D. 8-bit word comparator
Answer» C. 8-bit magnitude comparator
Discussion
2.

The purpose of a Digital Comparator is ____________

A. To convert analog input into digital
B. To create different outputs
C. To add a set of different numbers
D. To compare a set of variables or unknown numbers
Answer» E.
Discussion
3.

A magnitude comparator is defined as a digital comparator which has ____________

A. Only one output terminal
B. Two output terminals
C. Three output terminals
D. No output terminal
Answer» D. No output terminal
Discussion
4.

An identify comparator is defined as a digital comparator which has ____________

A. Only one output terminal
B. Two output terminals
C. Three output terminals
D. No output terminal
Answer» B. Two output terminals
Discussion
5.

A procedure that specifies finite set of steps is called ____________

A. Algorithm
B. Flow chart
C. Chart
D. Venn diagram
Answer» B. Flow chart
Discussion
6.

A circuit that compares two numbers and determines their magnitude is called ____________

A. Height comparator
B. Size comparator
C. Comparator
D. Magnitude comparator
Answer» E.
Discussion
7.

Comparators are used in ____________

A. Memory
B. CPU
C. Motherboard
D. Hard drive
Answer» C. Motherboard
Discussion
8.

In a comparator, if we get input as A>B then the output will be ____________

A. 1
B. 0
C. A
D. B
Answer» B. 0
Discussion
9.

If two numbers are not equal then binary variable will be ____________

A. 0
B. 1
C. A
D. B
Answer» B. 1
Discussion
10.

One that is not the outcome of magnitude comparator is ____________

A. a > b
B. a – b
C. a < b
D. a = b
Answer» C. a < b
Discussion
11.

All the comparisons made by comparator is done using ____________

A. 1 circuit
B. 2 circuits
C. 3 circuits
D. 4 circuits
Answer» B. 2 circuits
Discussion
12.

An identify comparator is defined as a digital comparator which has$

A. Only one output terminal
B. Two output terminals
C. Three output terminals
D. None of the Mentioned
Answer» B. Two output terminals
Discussion
13.

How_many_types_of_digital_comparators_are?$

A. 1
B. 2
C. 3
D. 4
Answer» C. 3
Discussion
14.

TTL 74LS85 is a

A. 1-bit digital comparator
B. 4-bit magnitude comparator
C. 8-bit magnitude comparator
D. 8-bit word comparator
Answer» C. 8-bit magnitude comparator
Discussion
15.

The purpose of a Digital Comparator is

A. To convert analog input into digital
B. To create different outputs
C. To add a set of different numbers
D. To compare a set of variables or unknown numbers
Answer» E.
Discussion
16.

A magnitude comparator is defined as a digital comparator which has

A. Only one output terminal
B. Two output terminals
C. Three output terminals
D. None of the Mentioned
Answer» D. None of the Mentioned
Discussion
17.

A circuit that compares two numbers and determine their magnitude is calle?

A. Height comparator
B. Size comparator
C. Comparator
D. Magnitude comparator
Answer» E.
Discussion
18.

Comparators are used in

A. Memory
B. CPU
C. Motherboard
D. Hard drive
Answer» C. Motherboard
Discussion
19.

Which one is a basic comparator?

A. XOR
B. XNOR
C. AND
D. NAND
Answer» B. XNOR
Discussion
20.

In a comparator, if we get input as A>B then the output will be

A. 1
B. 0
C. A
D. B
Answer» B. 0
Discussion
21.

How many inputs are required for a digital comparator?

A. 1
B. 2
C. 3
D. 4
Answer» B. 2
Discussion
22.

If two numbers are not equal then binary variable will be

A. 0
B. 1
C. a
D. b
Answer» B. 1
Discussion
23.

One that is not the outcome of magnitude comparator is

A. a > b
B. a – b
C. a < b
D. a = b
Answer» C. a < b
Discussion
24.

All the comparisons made by comparator is done using

A. 1 circuit
B. 2 circuits
C. 3 circuits
D. 4 circuits
Answer» B. 2 circuits
Discussion