Digital Electronics MCQ Questions & Answers

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Learn Digital Electronics MCQ questions & answers are available for a Electronics and Communications Engineering(ECE) students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Digital Electronics MCQ question is the important chapter for a Electronics and Communications Engineering(ECE) and GATE students. Page-5 section-3

Each section contains 100 MCQs on Digital Electronics .

The binary form of hexadecimal number 67BE is

A) 110011110111110 B) 11011110111110 C) 11001111011111 D) 100111101111100

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Number of bits needed to code 64 operation is

A) 4 B) 6 C) 8 D) 10

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The voltage levels of a negative logic system

A) Must necessarily be negative B) May be negative or positive C) Must necessarily be positive D) Must necessarily be 0 V and -5 V

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Karnaugh map is used to

A) minimize the number of flip-flops in a digital circuit B) minimize the number of gates only in a digital circuit C) minimize the number of gates and fan in of a digital circuit D) design gates

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Answer & Solution

Answer: Option B

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Which one of the following statements is correct?

A) Static 1 hazard may occur in a 2-level AND-OR gate network B) Static 0 hazard may occur in a 2-level AND-OR gate network C) Dynamic hazards may occur in a 2-level OR-AND gate network D) Essential hazards may occur in a combinational logic circuit

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

How many data inputs are there in a decoder having 64 output lines?

A) 1 B) 64 C) 6 D) 12

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Answer & Solution

Answer: Option C

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Find radix of the system shown in the figure below:
Digital Electronics mcq question image

A) 2 B) 4 C) 6 D) 8

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The decimal equivalent of binary number 10110.11 is:

A) 16.75 B) 20.75 C) 16.5 D) 22.75

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Answer & Solution

Answer: Option D

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The reason for using gray code in Karnaugh map is

A) Gray code provides cell values which differ in only one bit in adjacent cells B) Any other code can be used C) Gray code is more efficient than binary code D) None of these

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The number of one's present in the binary representation of
15 × 256 + 5 × 16 + 3 are

A) 8 B) 9 C) 10 D) 11

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Digital Electronics MCQ Questions & Answers | ECE