Digital Electronics:: Digital Concepts MCQs

Question 1

Which format requires fewer conductors?

Accepted Answer

Serial

Answer

Parallel

Answer

Both are the same

Answer

Cannot tell

Question 2

A pulse has a period of 15 ms. Its frequency is ________.

Accepted Answer

66.66 Hz

Answer

6.66 Hz

Answer

666.66 Hz

Answer

15 Hz

Question 3

Give the decimal value of binary 10000110.

Accepted Answer

13410

Answer

11010

Answer

11010

Question 4

The rise time is the time it takes a pulse to go from ________.

Accepted Answer

10% of the pulse amplitude to 90% of the pulse amplitude

Answer

the base line to the maximum HIGH voltage

Answer

10% of the pulse amplitude to the maximum HIGH voltage

Answer

the base line to 90% of the pulse amplitud

Question 5

What is an analog-to-digital converter?

Accepted Answer

It takes analog signals and puts them in digital format.

Answer

It makes digital signals.

Answer

It allows the use of digital signals in everyday life.

Answer

It stores information on a CD.

Question 6

A multiplexer has ________.

Accepted Answer

several inputs and one output

Answer

one input and several outp

Answer

one input and one output

Answer

several inputs and several outputs

Question 7

What is the decimal value of 23 ?

Accepted Answer

8

Answer

2

Answer

4

Answer

6

Question 8

An encoder converts ________.

Accepted Answer

noncoded information into coded form

Answer

coded information into noncoded form

Answer

HIGHs to LOWs

Answer

LOWs to HIGHs

Question 9

What kind of logic device or circuit is used to store information?

Accepted Answer

Register

Answer

Counter

Answer

Inverter

Answer

Buffer