Digital Electronics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Digital Electronics, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Digital Electronics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Digital Electronics mcq questions that explore various aspects of Digital Electronics problems. Each MCQ is crafted to challenge your understanding of Digital Electronics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Digital Electronics MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Digital Electronics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Digital Electronics knowledge to the test? Let's get started with our carefully curated MCQs!

Digital Electronics MCQs | Page 109 of 117

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Q1081.
The digit F in hexadecimal system is equivalent to number __________ in decimal system.

a.

16

b.

15

c.

17

d.

8

Discuss
Answer: (b).15
Q1082.
In level clocking the output can change

a.

on rising edge of clock cycle

b.

on falling edge of clock cycle

c.

during entire half cycle of the clock

d.

none of the above

Discuss
Answer: (c).during entire half cycle of the clock
Q1083.
Which family of logic circuits uses field effect transistors?

a.

TTL

b.

CMOS

c.

Both LED and well as LCD

d.

None of the above

Discuss
Answer: (b).CMOS
Q1084.
An encoder converts decimal numbers to binary and other codes.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q1085.
Equipment using BCD numbers

a.

pocket calculators

b.

electronic counter

c.

digital voltmeters

d.

all of the above

Discuss
Answer: (d).all of the above
Q1086.
In a microprocessor system the stack is used for

a.

starting the program return address whenever a subroutine jump instruction is execute

b.

transmitting and receiving input and output data

c.

starting all important CPU register contents whenever an interrupt is to be serviced

d.

storing program instructions for interrupt service routine

Discuss
Answer: (a).starting the program return address whenever a subroutine jump instruction is execute
Q1087.
In N channel MOSFET with gate reverse biased, the gate current is of the order

a.

10‾³ amp

b.

10‾⁶ amp

c.

10‾⁹ amp

d.

10‾¹² amp

Discuss
Answer: (d).10‾¹² amp
Q1088.
In 8085 microprocessor, a RIM instruction is used to

a.

disable the interrupts 7.5, 6.5, 5.5

b.

enable the interrupts 7.5, 6.5, 5.5

c.

read in the serial input data

d.

none of the above

Discuss
Answer: (c).read in the serial input data
Q1089.
K maps can be drawn

a.

only for 2 variables

b.

only for 3 variables

c.

only for 4 variables

d.

for any number of variables

Discuss
Answer: (d).for any number of variables
Q1090.
When a TTL is driving an CMOS gates it is necessary to ensure that

a.

VOL(for TTL) ≤ VIL (for CMOS) and V0H (for TTL) ≥ VIH (for CMOS)

b.

V0L (for TTL) ≥ VIL (for CMOS)

c.

V0H (for TTL) ≤ VIH (for CMOS)

d.

V0L (for TTL) ≥ VIL (for CMOS) and V0H (for TTL) ≤ VIH (for CMOS)

Discuss
Answer: (a).VOL(for TTL) ≤ VIL (for CMOS) and V0H (for TTL) ≥ VIH (for CMOS)
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