Ex-OR and Ex-NOR Gates MCQs

Question 1

What will a design engineer do after he/she is satisfied that the design will work?

Accepted Answer

Program a chip and test it

Answer

Put it in a flow chart

Answer

Give the design to a technician to verify the design

Answer

Perform a vector test

Question 2

What is the indication of a short on the input of a load gate?

Accepted Answer

There is a signal loss to all gates on the node, and the affected node will be stuck in the LOW state.

Answer

Only the output of the defective gate is affected

Answer

There is a signal loss to all gates on the node.

Answer

The affected node will be stuck in the LOW state.

Question 3

In HDL, LITERALS is/are:

Accepted Answer

scalars.

Answer

digital systems.

Answer

binary coded decimals.

Answer

a numbering system.

Question 4

Which of the following expressions is in the sum-of-products form?

Accepted Answer

AB + CD

Answer

(A + B)(C + D)

Answer

(AB)(CD)

Answer

AB(CD)

Question 5

A decoder can be used as a demultiplexer by ________.

Accepted Answer

tying all data-select lines HIGH

Answer

tying all enable pins LOW

Answer

tying all data-select lines LOW

Answer

using the input lines for data selection and an enable line for data input

Question 6

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

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 7

Which statement below best describes a Karnaugh map?

Accepted Answer

Variable complements can be eliminated by using Karnaugh maps.

Answer

A Karnaugh map can be used to replace Boolean rules.

Answer

The Karnaugh map eliminates the need for using NAND and NOR gates.

Answer

Karnaugh maps provide a visual approach to simplifying Boolean expressions.

Question 8

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

Accepted Answer

9

Answer

0

Answer

3

Answer

None. All outputs are HIGH.

Question 9

The design concept of using building blocks of circuits in a PLD program is called a(n):

Accepted Answer

hierarchical design.

Answer

architectural design.

Answer

digital design.

Answer

verilog.