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MCQ Test 2

The document contains a set of multiple-choice questions related to digital technology concepts, including digital-to-analog converters, binary and hexadecimal systems, and various electronic components like flip-flops and multiplexers. Each question is followed by four answer options, with a provided answer key at the end. The content is designed to test knowledge in digital electronics and computing fundamentals.

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Priya Navaneethakrishnan
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19 views3 pages

MCQ Test 2

The document contains a set of multiple-choice questions related to digital technology concepts, including digital-to-analog converters, binary and hexadecimal systems, and various electronic components like flip-flops and multiplexers. Each question is followed by four answer options, with a provided answer key at the end. The content is designed to test knowledge in digital electronics and computing fundamentals.

Uploaded by

Priya Navaneethakrishnan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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1 Which of the following statements does NOT describe an advantage of digital technology?

A. The values may vary over a continuous range.

B. The circuits are less affected by noise.

C
The operation can be programmed.
.

D
Information storage is easy.
.
2 The base of the hexadecimal system is:
A. eight.

B. sixteen.

C
ten.
.

D
two.
.
3 What is a digital-to-analog converter?
A. It takes the digital information from an audio CD and converts it to a usable form.

B. It allows the use of cheaper analog techniques, which are always simpler.

C
It stores digital data on a hard drive.
.

D
It converts direct current to alternating current.
.
4 What are the symbols used to represent digits in the binary number system?
A. 0,1

B. 0,1,2

C
0 through 8
.

D
1,2
.
5 A full subtracter circuit requires ________.
A. two inputs and two outputs

B. two inputs and three outputs

C
three inputs and one output
.

D
three inputs and two outputs
.
6 The output of an AND gate is LOW ________.
A. all the time

B. when any input is LOW

C
when any input is HIGH
.
D
when all inputs are HIGH
.
7 A decoder converts ________.
A. noncoded information into coded form

B. coded information into non coded form

C
HIGHs to LOWs
.

D
LOWs to HIGHs
.
8 A DAC changes ________.
A. an analog signal into digital data

B. digital data into an analog signal

C
digital data into an amplified signal
.

D
none of the above
.
9 A demultiplexer has ________.
A. one data input and a number of selection inputs, and they have several outputs

B. one input and one output

C
several inputs and several outputs
.

D
several inputs and one output
.
10 A flip-flop has ________.
A. one stable state

B. no stable states

C
two stable states
.

D
none of the above
.
11 What is an analog-to-digital converter?
A. It makes digital signals.

B. It takes analog signals and puts them in digital format.

C
It allows the use of digital signals in everyday life.
.

D
It stores information on a CD.
.
12 A multiplexer has ________.
A. one input and several outputs

B. one input and one output

C
several inputs and several outputs
.
D
several inputs and one output
.
13 An encoder converts ________.
A. Non coded information into coded form

B. coded information into non coded form

C
HIGHs to LOWs
.

D
LOWs to HIGHs
.
14 Hexadecimal letters A through F are used for decimal equivalent values from:
A. 1 through 6

B. 9 through 14

C
10 through 15
.

D
11 through 17
.
15 Digital electronics is based on the ________ numbering system.
A. decimal

B. octal

C
binary
.

D
hexadecimal
.

Answer Key

1 A 6 B 11 B
2 B 7 B 12 D
3 A 8 B 13 A
4 A 9 A 14 C
5 D 10 C 15 C

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