Digital Computer Electronics MCQ Questions & Answers

1

A binary adder is a logic circuit that can add _____ binary numbers at a time.

A) Hundreds B) Thousands C) One D) Two E) None of the above

Discuss

Answer & Solution

Answer: Option D

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

2

A half-adder adds _____ bits

A) 16 B) 8 C) 10 D) 2 E) None of the above

Discuss

Answer & Solution

Answer: Option D

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

3

The 2764 is 65,536-bit EPROM organized as 8,192 words of 8 bits each. How many address lines does it have?

A) 12 B) 14 C) 13 D) 8 E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

4

What does 4k represent?

A) 4000 B) 4096 C) 40 D) 400 E) None of the above

Discuss

Answer & Solution

Answer: Option B

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

5

Conversion of decimal number 42₁₀ to it's octal number equivalent is

A) 57₈ B) 42₈ C) 47₈ D) 52₈ E) None of the above

Discuss

Answer & Solution

Answer: Option D

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

6

The _____ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.

A) EPROM B) ROM C) PROM D) RAM E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

7

The logic 1 in positive logic system is represented by:

A) zero voltage B) lower voltage level C) higher voltage level D) negative voltage E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

8

Conversion of decimal number 99₁₀ to it's binary number equivalent is

A) 1100011₂ B) 100011₂ C) 1110001₂ D) 111 1000₂ E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

9

The number of two-input NAND gates required to produce the two-input OR function is

A) 1 B) 2 C) 3 D) 4 E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

10

A 2's-complement adder-subtracter can add or subtract binary numbers. Sign-magnitude numbers represent _____ decimal numbers, and 2's complements stand for _____ decimal numbers.

A) hexa, sign B) sign, hexa C) positive, negative D) negative, positive E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

Digital Computer Electronics MCQ Questions & Answers | Computer Science