Explore topic-wise MCQs in Digital Circuits.

This section includes 6 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 selector inputs to an arithmetic/logic unit (ALU) determine the ____________

A. Selection of the IC
B. Arithmetic or logic function
C. Data word selection
D. Clock frequency to be used
Answer» C. Data word selection
Discussion
2.

When performing subtraction by addition in the 2’s-complement system ____________

A. The minuend and the subtrahend are both changed to the 2’s-complement
B. The minuend is changed to 2’s-complement and the subtrahend is left in its original form
C. The minuend is left in its original form and the subtrahend is changed to its 2’s-complement
D. The minuend and subtrahend are both left in their original form
Answer» D. The minuend and subtrahend are both left in their original form
Discussion
3.

The binary subtraction of 0 – 0 =?

A. Difference = 0, borrow = 0
B. Difference = 1, borrow = 0
C. Difference = 1, borrow = 1
D. Difference = 0, borrow = 1
Answer» B. Difference = 1, borrow = 0
Discussion
4.

A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is ____________

A. Ex-NOR gate
B. OR gate
C. Ex-OR gate
D. NAND gate
Answer» B. OR gate
Discussion
5.

Controlled buffers can be useful ____________

A. To control the circuit’s output into the bus
B. In comparison of component’s output with its input
C. In increasing the output from its low input
D. All of the Mentioned
Answer» B. In comparison of component’s output with its input
Discussion
6.

Controlled inverter is also known as ____________

A. Controlled buffer
B. NOT gate
C. Both controlled buffer and NOT gate
D. Controlled gate
Answer» D. Controlled gate
Discussion