DIGITAL COMPUTER ELECTRONICS QUIZ

The _____ is a sequence of instructions that tells the computer how to process the data.

program

instruction

data

None of these

controls

TRUE ANSWER : ?
YOUR ANSWER : ?

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

XOR

None of these

NAND

OR

NOR

TRUE ANSWER : ?
YOUR ANSWER : ?

The number of binary bits required to represent a hexadecimal digit is

8

None of these

4

3

6

TRUE ANSWER : ?
YOUR ANSWER : ?

Express -7 as 16-bit signed binary numbers.

1000 0000 0000 0111

0111 0000 0000 0000

0111 0000 0000 0001

0000 0000 0000 0111

None of these

TRUE ANSWER : ?
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In boolean algebra, the overbar stands for the NOT operation, the plus sign stands for the _____ operation.

None of these

NAND

AND

OR

NOR

TRUE ANSWER : ?
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The clock signals are used in sequential logic circuits

to synchronize events in various parts of a system

to carry serial data signals

to tell how much time has elapsed since the system was turned on

None of these

to tell the time of the day

TRUE ANSWER : ?
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Semiconductor memory is:

All of these

somewhat slower than magnetic core memory

None of these

a volatile memory

somewhat larger than the magnetic core memory

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

AC+B

A+BC

None of these

AB+AC

A+B+C

TRUE ANSWER : ?
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Conversion of binary number 1010000101112 to hexadecimal number is

D8F916

A8B916

D9F816

None of these

A1716

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not functionally a complete set?

NOR

AND, OR

AND, OR, NOT

NAND

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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