Digital Circuit and Microprocessor MCQs

Question 1

When we demogranize A B ,we get

Accepted Answer

A + B

Answer

AB

Answer

X +

Answer

AB

Question 2

The dual of the statement (A + 1) = 1 is

Accepted Answer

A.0=0

Answer

A . 1 =A

Answer

A+A=A

Answer

A . A = 1

Question 3

The expression ABC can be simplified to

Accepted Answer

( d) -A- + 73- +

Answer

A . B

Answer

AB + BC + CA

Answer

AB +

Question 4

While obtaining minimal sum-ofproducts expression,

Accepted Answer

only such don't cares that aid minimization are treated as logic Is

Answer

all don't cares are ignored

Answer

all don't cares are treated as logic Is

Answer

all don't cares are treated as logic Os

Question 5

In a saturated bipolar logic circuit, transistor operate

Accepted Answer

in saturation

Answer

in deep cut-off

Answer

over active region

Answer

just short of saturation

Question 6

Saturated logic circuits have inherently

Accepted Answer

low switching speed

Answer

short saturation delay time

Answer

higher power dissipation

Answer

lower noise immunity

Question 7

Noise margin is expressed in

Accepted Answer

volt

Answer

decibel

Answer

watt

Answer

phon

Question 8

DTL family employs

Accepted Answer

diodes, resistors and transistors

Answer

resistors and transistors

Answer

diode and resistor

Answer

diode and transistors

Question 9

The chief advantage of Schotty TTL logic family is its least

Accepted Answer

propagation delay

Answer

power dissipation

Answer

fan-in

Answer

noise immunity