Digital Computer Electronics MCQ Questions & Answers

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Each section contains 100 MCQs on Digital Computer Electronics .

The _____ gate has two or more input signals. All inputs must be high to get a high output

A) OR B) NAND C) AND D) NOR E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

Conversion of an octal number 142₈ to binary number is

A) 1100010₂ B) 110110₂ C) 1100011₂ D) 1101101₂ E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

Conversion of hexadecimal number 93FA₁₆ to it's binary number equivalent is

A) 1001001111111010₂ B) 10010011111110111₂ C) 110011111110011₂ D) 111110000111₂ E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

BCD numbers are useful whenever _____ information is transferred into or out of a digital system.

A) decimal B) binary C) ASCII D) hexadecimal E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

A NOR gate recognizes only the input word whose bits are _____

A) 0's and 1's B) 1's C) 0's D) 0's or 1's E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

How many bytes are there in 1011 1001 0110 1110 numbers?

A) 1 B) 2 C) 4 D) 8 E) None of the above

Discuss

Answer & Solution

Answer: Option B

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

Consider as RS flip-flops with both inputs set to 0. If a momentary '1' is applied at the input S, then the output

A) Q will flip from 0 to 1 B) Q will flip from 0 to 1 and then back to 0 C) Q will flip from 0 to 1 D) Q will flip from 0 to 1 and then back to 0 E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

Which of the following logic expression is wrong?

A) 1 + 0=1 B) 1 + 1=0 C) 1+0+1 = 1 D) 1 + 1 + 1 = 1 E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

Subtraction of 100101100₂ from 1110101010₂ is

A) 1001011110₂ B) 0110100001₂ C) 1111000001₂ D) 1111011111₂ E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

Addition of 110101₂ and 101111₂ is

A) 1100100₂ B) 1101000₂ C) 1110111₂ D) 110011₂ E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

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Digital Computer Electronics MCQ Questions & Answers | Computer Science