Digital Circuit and Microprocessor MCQs

Question 1

How many flip-flop circuits are needed to divide by 16?

Accepted Answer

Four

Answer

Two

Answer

Eight

Answer

Sixteen

Question 2

An index register in digital computer is register to be used for

Accepted Answer

Address modification purpose

Answer

Performing arithmetic; and logic operations

Answer

Temporary storage of result

Answer

Counting number of times a program is executed

Question 3

A toggle operation is used

Accepted Answer

with a flip-flop

Answer

without a flip-flop

Answer

with a gate circuit

Answer

with a flip-flop and a gate circuit

Question 4

The op. amp. is used in

Accepted Answer

Shift registers

Answer

A/D converters

Answer

D/A converters

Answer

None of the above

Question 5

Read and write capabilities are available in

Accepted Answer

RAM

Answer

ROM

Answer

Both RAM and ROM

Answer

Neither RAM nor ROM

Question 6

Which of the following is a temporary memory?

Accepted Answer

RAM

Answer

ROM

Answer

Both

Answer

None

Question 7

Which of the following changes analog voltage to binary data?

Accepted Answer

A/D converter

Answer

D/A converter

Answer

Both

Answer

None of the above

Question 8

In the circuit shown the output will be

Accepted Answer

square wave pulse

Answer

sine wave

Answer

linear

Answer

non-linear

Question 9

The pulse width of the wave form shown in

Accepted Answer

5 ms

Answer

0.5 s

Answer

5 s

Answer

2.5 ms 5