Computer · Introduction to Computing · page 12 of 13

Number Systems & Digital MCQs with Answers

Includes 19 past paper MCQs (marked).

Timed quizzes, instant results, track your progress — free

Practice these MCQs in the app

All Computer chapters

Number Systems & Digital Logic MCQs (111–120)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

Answers and one-liners are hidden. Tap an option to check that question, or show all.

111.
A combinational circuit is typically constructed using which components?
Correct Answer: D. Logic gates
One-liner
A combinational circuit is typically constructed using logic gates.
112.
What format is data converted into when it is entered into a computer?
Correct Answer: A. Binary numbers
One-liner
When data is entered into a computer, it is converted into binary numbers (0s and 1s), which is the only language a computer's processor can understand.
113.
Past Paper MCQ
A number system that uses eight different symbols to represent quantities is called what?
Correct Answer: C. Octal
One-liner
The number system that uses eight different symbols (0–7) to represent quantities is called Octal.
114.
What does the term 'bit' stand for in computing terminology?
Correct Answer: A. Binary digit
One-liner
The term 'bit' stands for Binary digit, which is the smallest unit of data in computing.
115.
Which digits are included in the decimal number system?
Correct Answer: B. 0 to 9
One-liner
The decimal number system includes digits from 0 to 9, making it a base-10 system.
116.
How many bits are there in one nibble?
Correct Answer: B. 4 bits
One-liner
One nibble consists of 4 bits.
117.
What is a logic gate in computer science?
Correct Answer: C. Digital circuit
One-liner
A logic gate is a digital circuit that performs a basic Boolean function on one or more binary inputs to produce a single binary output.
118.
What number system do all computers use to process data?
Correct Answer: B. Binary number system
One-liner
All computers process data using the Binary number system, which uses only two digits: 0 and 1.
119.
Which type of logic gate is used for performing logical multiplication in digital circuits?
Correct Answer: B. AND gate
One-liner
The AND gate is used for performing logical multiplication in digital circuits.
120.
How many bytes are there in a half word?
Correct Answer: B. 2
One-liner
A half word consists of 2 bytes (16 bits).

Previous chapter: Ports & Buses Next chapter: Miscellaneous

Number Systems & Digital MCQs with Answers

Number Systems & Digital Logic MCQs (111–120)

Subjects

Exams

Platform

Legal