DIGITAL COMPUTER ELECTRONICS QUIZ

The reduced form of the Boolean expression (A+B)(A+C) is:

AB+AC

A+B+C

A+BC

AC+B

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The 2's compliment of binary number 010111.1100 is

101000.01

None of these

10111.0011

101001.11

101000.0011

TRUE ANSWER : ?
YOUR ANSWER : ?

Multiplication of 478 by 528 is

(3144)8

(3184)8

(4147)8

(3146)8

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The output 0 and 1 levels for TTL logic family is approximately

0.1 and 5 V

-1.75 and -0.9 V

None of these

0.9 and 1.75V

0.6 and 3.5 V

TRUE ANSWER : ?
YOUR ANSWER : ?

Conversion of binary number 11000112 to its decimal number is

None of these

9710

9910

2910

9310

TRUE ANSWER : ?
YOUR ANSWER : ?

How many outputs signals can a gate have?

both (a) and (b)

one

two only

more than one

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The memory cell of a dynamic RAM is simpler and smaller than the memory cell of a _____ RAM.

volatile

None of these

semiconductor

bipolar

static

TRUE ANSWER : ?
YOUR ANSWER : ?

Conversion of hexadecimal number 1D7F16 to a decimal number is

None of these

877110

555710

755110

778110

TRUE ANSWER : ?
YOUR ANSWER : ?

The Gray code for decimal 7 is

100

1011

101

111

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

What logic function is produced by adding an inverter to each input and the output of an AND gate?

NAND

OR

None of these

XOR

NOR

TRUE ANSWER : ?
YOUR ANSWER : ?

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