Digital Computer Electronics MCQ Questions & Answers

1

Conversion of decimal number 61₁₀ to it's binary number equivalent is

A) 110011₂ B) 11001110₂ C) 111101₂ D) 11111₂ E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

2

An OR gate can be imagined as

A) switches connected in series B) switches connected in parallel C) MOS transistors connected in series D) All of the above E) None of the above

Discuss

Answer & Solution

Answer: Option B

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

3

Address 200H contains the byte 3FH. What is the decimal equivalent of 3FH

A) 63 B) 32 C) 16 D) 38 E) None of the above

Discuss

Answer & Solution

Answer: Option A

Solution:

To convert a hexadecimal number to its decimal equivalent, you need to understand the place values in hexadecimal.

In hexadecimal, the digit positions represent powers of 16, starting from 16^0 on the right.

The number 3F in hexadecimal can be broken down as follows:

3 is in the 16^1 position, so its value is 3 * 16 = 48.

F is in the 16^0 position. In hexadecimal, F equals 15, so its value is 15 * 1 = 15.

Adding these values together gives 48 + 15 = 63.

Therefore, the decimal equivalent of 3FH is 63.

4

Conversion of an octal number 112₈ to hexadecimal number is

A) 4A₁₆ B) 5A₁₆ C) 15₁₆ D) 20₁₆ E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

5

The functional difference between SR flip-flop and JK flip-flop is that

A) JK flip-flop is faster than SR flip-flop B) JK flip-flop has a feed back path C) JK flip-flop accepts both inputs 1 D) JK flip-flop does not require external clock E) None of the above

Discuss

Answer & Solution

Answer: Option C

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

6

The inverter OR gate and AND gate are called decision-making elements because they can recognize some input _____ while disregarding others. A gate recognizes a word when its output is _____

A) words, high B) bytes, low C) bytes, high D) character, low E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

7

A positive AND gate is also a negative

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

Discuss

Answer & Solution

Answer: Option D

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

8

In which code the successive code characters differ in only one bit position?

A) gray code B) excess 3 code C) 8421 code D) algebraic code E) None of the above

Discuss

Answer & Solution

Answer: Option A

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

9

Conversion of binary number 101101₂ to hexadecimal is

A) 37₁₆ B) 2D₁₆ C) 2E₁₆ D) 27₁₆ E) None of the above

Discuss

Answer & Solution

Answer: Option B

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

10

ASCII and EBCDIC differ in

A) their efficiency in storing data B) the random and sequential access method C) the number of bytes used to store characters D) their collecting sequences E) None of the above

Discuss

Answer & Solution

Answer: Option D

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

Digital Computer Electronics MCQ Questions & Answers | Computer Science