# Digital Computer Electronics MCQ – Set 01 :: Computer Science Engineering

Are you guys looking for computer science MCQ Questions with Answers PDF Free Download as per computer science new exam pattern? You came to the right page. This may assist you to understand and check your knowledge about the Subjects. Students also can take a free test of the Multiple Choice Questions of computer science. Each question has four options followed by the right answer. These computer science MCQ Questions are selected supported by the newest exam pattern.

## Q1. Which of the following Boolean algebra statements represent commutative law

(A) (A+B)+CA+(B+C)
(B) A.(B+C)(A.B)+(A.C)
(C) A+BB+A
(D) A+AA

(A) Latch
(B) Clock
(C) Master
(D) Slave

(A) 1
(B) 2
(C) 4
(D) 8

## Q4. 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) Q̅ will flip from 0 to 1
(D) Q̅ will flip from 0 to 1 and then back to 0

Answer:(A) Q will flip from 0 to 1

(A) 1218
(B) 1438
(C) 1248
(D) 1198

## Q6. A logic circuit which is used to change a BCD number into an equivalent decimal number is

(A) Decoder
(B) Encoder
(C) Multiplexer
(D) Code converter

(A) Odd, even
(B) High, low
(C) Low, high
(D) Even, odd

(A) Even
(B) Different
(C) Low
(D) High

(A) 2
(B) 8
(C) 10
(D) 16

(A) 2
(B) 8
(C) 10
(D) 16

(A) 101001.1100
(B) 101000.0100
(C) 010111.0011
(D) 101000.0011

(A) 1100112
(B) 1001112
(C) 1100112
(D) 11110112

## Q13. What is the 1’s complement of 0000 1111 0010 1101 number?

(A) 1111 0000 0010 1101
(B) 1111 0000 1101 0010
(C) 1111 1100 1010 1100
(D) 1001 0010 1010 1100

Answer: (B) 1111 0000 1101 0010

## Q14. The OR gate has two or more input signals. If any input is _ the output is high.

(A) Low
(B) High
(C) Zero
(D) None of the above

(A) Top-bottom
(B) System
(C) Two-stage
(D) Two-states