Explore topic-wise MCQs in Digital Circuits.

This section includes 17 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.

The flag bits in an ALU is defined as ____________

A. The total number of registers
B. The status bit conditions
C. The total number of control lines
D. All of the Mentioned
Answer» C. The total number of control lines
Discussion
2.

If the two numbers include a sign bit in the highest order position, the bit conditions of interest are the sign of the result, a zero indication and ___________

A. An underflow condition
B. A neutral condition
C. An overflow condition
D. One indication
Answer» D. One indication
Discussion
3.

If the two numbers are unsigned, the bit conditions of interest are the ______ carry and a possible _____ result.

A. Input, zero
B. Output, one
C. Input, one
D. Output, zero
Answer» E.
Discussion
4.

The design of an ALU is based on ____________

A. Sequential logic
B. Combinational logic
C. Multiplexing
D. De-Multiplexing
Answer» C. Multiplexing
Discussion
5.

All logic operations can be obtained by means of ____________

A. AND and NAND operations
B. OR and NOR operations
C. OR and NOT operations
D. NAND and NOR operations
Answer» E.
Discussion
6.

Procedure for the design of combinational circuits are:

A. B, C, D, E, A
B. A, D, E, B, C
C. A, B, E, C, D
D. B, A, E, C, DView Answer
Answer» D. B, A, E, C, DView Answer
Discussion
7.

A digital system consists of _____ types of circuits.

A. 2
B. 3
C. 4
D. 5
Answer» B. 3
Discussion
8.

The basic building blocks of the arithmetic unit in a digital computers are ____________

A. Subtractors
B. Adders
C. Multiplexer
D. Comparator
Answer» C. Multiplexer
Discussion
9.

THE_FLAG_BITS_IN_AN_ALU_IS_DEFINED_AS?$

A. The total number of registers
B. The status bit conditions
C. The total number of control lines
D. All of the Mentioned
Answer» C. The total number of control lines
Discussion
10.

IF_THE_TWO_NUMBERS_INCLUDE_A_SIGN_BIT_IN_THE_HIGHEST_ORDER_POSITION,_THE_BIT_CONDITIONS_OF_INTEREST_ARE_THE_SIGN_OF_THE_RESULT,_A_ZERO_INDICATION_AND?$

A. An underflow condition
B. A neutral condition
C. An overflow condition
D. None of the Mentioned
Answer» D. None of the Mentioned
Discussion
11.

If the two numbers are unsigned, the bit conditions of interest are the ______ carry and a possible _____ result?

A. Input, zero
B. Output, one
C. Input, one
D. Output, zero
Answer» E.
Discussion
12.

The design of an ALU is based on

A. Sequential logic
B. Combinational logic
C. Multiplexing
D. None of the Mentioned
Answer» C. Multiplexing
Discussion
13.

All logic operations can be obtained by means of

A. AND and NAND operations
B. OR and NOR operations
C. OR and NOT operations
D. AND, OR and NOT operations
Answer» E.
Discussion
14.

In a sequential circuit, the output at any time depends only on the input values at that time.

A. Past output values
B. Intermediate values
C. Present input values
D. None of the Mentioned
Answer» D. None of the Mentioned
Discussion
15.

In a combinational circuit, the output at any time depends only on the _______ at that time.

A. Voltage
B. Intermediate values
C. Input values
D. None of the Mentioned
Answer» D. None of the Mentioned
Discussion
16.

A digital system consists of _____ types of circuits.

A. 2
B. 3
C. 4
D. 5
Answer» B. 3
Discussion
17.

The basic building blocks of the arithmetic unit in a digital computers are

A. Subtractors
B. Adders
C. Multiplexer
D. None of the Mentioned
Answer» C. Multiplexer
Discussion