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 61 of 117

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Q601.
In 8085 microprocessor, an interrupt service request is serviced

a.

immediately on receipt of request

b.

after the execution of the current instruction is completed

c.

at the end of the current machine cycle

d.

none

Discuss
Answer: (b).after the execution of the current instruction is completed
Q602.
Which interrupts are masked?

a.

5.5

b.

6.5

c.

7.5

d.

None

Discuss
Answer: (b).6.5
Q603.
Assertion (A): A high density IC has more diodes, transistors and resistors per unit surface area.

Reason (R): A high density IC can handle high voltages.

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is true, R is false

d.

A is false, R is true

Discuss
Answer: (c).A is true, R is false
Q604.
CMOS is extensively used in

a.

pocket calculators

b.

digital wrist watches

c.

satellites

d.

all of the above

Discuss
Answer: (d).all of the above
Q605.
Four MSI TTL 4-bit ripple counters are cascaded to form a 16-bit binary counter. Its propagation delay is about __________ nanoseconds.

a.

70

b.

140

c.

210

d.

280

Discuss
Answer: (d).280
Q606.
The Boolean function A + BC is reduced form of

a.

AB + BC

b.

Aฬ…B + Aฬ…BC

c.

(A + B) (A + C)

d.

(A + C)B

Discuss
Answer: (c).(A + B) (A + C)
Q607.
To convert JK flip flop to D flip flop

a.

connect D to both J and K

b.

connect D to J directly and D to K through inverter

c.

connect D to K directly and D to J through inverter

d.

connect D to K and leave J open

Discuss
Answer: (b).connect D to J directly and D to K through inverter
Q608.
Read cycle is always followed by (during instructions execution)

a.

read cycle

b.

write cycle

c.

delete signal

d.

none of these

Discuss
Answer: (b).write cycle
Q609.
Semiconductor ROM's are sometimes preferred to semiconductor RAM's because

a.

ROM's are cheaper than RAMs

b.

ROMs are faster

c.

ROMs do not require power supply for their operations

d.

Programs stored in ROMs cannot be altered either by the power failure or by the user

Discuss
Answer: (d).Programs stored in ROMs cannot be altered either by the power failure or by the user
Q610.
RAMs can be built with bipolar or CMOS transistor RAMs that are not possible with bipolar transistors are

a.

SRAM

b.

SRAM, DRAM

c.

DRAM

d.

PROM

Discuss
Answer: (c).DRAM
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