DIGITAL ELECTRONICS QUIZ

Statement(A): 2’s complement arithmetic is preferred in digital computers. Statement(R):The Hardware required to obtain the 2’s complement of a number is simple.

Both A & R are true but R is not the correct explanation of A

A is true but R is false

A is false but R is true

Both A & R are true and R is the correct explanation of A

TRUE ANSWER : ?
YOUR ANSWER : ?

If clock time period is 1ms, what is its frequency

1 mHz

1 kHz

None of these

1 MHz

TRUE ANSWER : ?
YOUR ANSWER : ?

In SSI, the number of gate circuits per chip is

< 12

< 20

< 25

< 6

TRUE ANSWER : ?
YOUR ANSWER : ?

A computer has a word length of 8 bits (including sign). It is required to determine the range of integers that can be stored in the computer. If 2’s complement is used to represent the numbers, then the range will be

-256 to 256

-128 to 127

-256 to 255

-128 to 128

TRUE ANSWER : ?
YOUR ANSWER : ?

If J = K (J and K are shorted) in a JK flip-flop, what circuit is made

Shorted JK flip-flop

K flip-flop

SR flip-flop

T flip-flop

TRUE ANSWER : ?
YOUR ANSWER : ?

In a read-only memory information can be stored

at the time of fabrication

by the user only once during its life time

by the user a number of times

in any of the above ways depending upon the type of memory

TRUE ANSWER : ?
YOUR ANSWER : ?

It is desired to have a 64 × 8 ROM. The ROMs available are of 16 × 4 size. The number of ROMs required will be

8

6

4

2

TRUE ANSWER : ?
YOUR ANSWER : ?

A device which converts BCD into octal is called

encoder

demultiplexer

code converter

decoder

TRUE ANSWER : ?
YOUR ANSWER : ?

A sequence of binary digits is known as

bit string

word string

byte string

input string

TRUE ANSWER : ?
YOUR ANSWER : ?

X = 01110 and Y = 11001 are two 5-bit binary numbers represented in 2’s complement format. The sum of X and Y in 2’s complement format using 6 bits is

0001111

100111

001000

101001

TRUE ANSWER : ?
YOUR ANSWER : ?