DIGITAL COMPUTER ELECTRONICS QUIZ

Which of the following is a universal gate?

EX-OR

None of these

OR

AND

NAND

TRUE ANSWER : ?
YOUR ANSWER : ?

The NOR gate is logically equivalent to an OR gate followed by an _____

XOR

AND

XAND

inverter

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The Gray code for decimal 7 is

1011

None of these

100

101

111

TRUE ANSWER : ?
YOUR ANSWER : ?

An inventor is a gate with only _____ input; the output is always in the opposite state from the input

one

two

None of these

more than one

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Conversion of an octal number 1108 to its decimal number is

11010

7210

7010

7310

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

A combinational logic circuit which is used to send data coming from a single source to two or more separate destinations is called as

decoder

encoder

multiplexer

None of these

demultiplexer

TRUE ANSWER : ?
YOUR ANSWER : ?

FETs are used in linear ICs to:

increase input resistance

increase device complexity

provide large resistances

(a) and (b) above

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Why are digital circuits easier to design than analog circuits?

they are smaller in size

all elements of digital circuit are from the same family

None of these

they do not control electricity precisely over a wide range

they are made in the form of ICs

TRUE ANSWER : ?
YOUR ANSWER : ?

Conversion of an octal number 738 to binary number is

1100102

1111002

None of these

1110112

1101112

TRUE ANSWER : ?
YOUR ANSWER : ?

The hexadecimal number system is widely used in analyzing and programming ______

chips

registers

None of these

vacuum tube

microprocessors

TRUE ANSWER : ?
YOUR ANSWER : ?

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