Q.1

In boolean algebra, the times sign stands for the _____ operation

  • AND
  • OR
  • NAND
  • NOR
  • None of the above
Q.2

Computer ICs work reliably because they are based on _____ design.

  • Top-bottom
  • System
  • Two-stage
  • Two-states
  • None of the above
Q.3

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
  • demultiplexer
  • None of the above
Q.4

How many full and half-adders are required to add 16-bit numbers?

  • 8 half-adders, 8 full-adders
  • 1 half-adders, 15 full-adders
  • 16 half-adders, no full-adders
  • 4 half-adders, 12 full-adders
  • None of the above
Q.5

The leading bit stands for the _____ and the remaining bits for the _____ is known as signed binary numbers.

  • sign, remainder
  • sign, magnitude
  • value, sign
  • variable, value
  • None of the above
Q.6

Addition of 102 and 112 is

  • 1002
  • 1012
  • 1112
  • 1102
  • None of the above
Q.7

Conversion of binary number 1011012 to hexadecimal is

  • 3716
  • 2D16
  • 2E16
  • 2716
  • None of the above
Q.8

Conversion of decimal number 6710 to it's octal number equivalent is

  • 1008
  • 1038
  • 1098
  • 998
  • None of the above
Q.9

Conversion of an octal number 1438 to its decimal number is

  • 9010
  • 97110
  • 9910
  • 10710
  • None of the above
Q.10

What logic function is obtained by adding an inverter to the inputs of an AND gate?

  • OR
  • NAND
  • XOR
  • NOR
  • None of the above
Q.11

What is the decimal equivalent of 210?

  • 4096
  • 1024
  • 1000
  • 16
  • None of the above
Q.12

The control and arithmetic-logic sections are called the _____

  • Block diagram
  • Control Unit
  • Input / Output Unit
  • Central Processing Unit
  • None of the above
Q.13

The output of the following gate is 0 only if at least one of the inputs is 1:

  • AND gate
  • OR gate
  • EX-OR gate
  • NOR gate
  • None of the above
Q.14

How many outputs signals can a gate have?

  • one
  • more than one
  • two only
  • both (a) and (b)
  • None of the above
Q.15

Addition of 11012 and 10102 is

  • 101012
  • 110002
  • 110112
  • 101112
  • None of the above
Q.16

A flip-flop can store:

  • 1 bits of data
  • 2 bits of data
  • 3 bits of data
  • 4 bits of data
  • None of the above
Q.17

Conversion of binary number 1000112 to an octal number is

  • 438
  • 478
  • 498
  • 508
  • None of the above
Q.18

A _____ is a group of devices that store digital data.

  • circuits
  • register
  • variations
  • bit
  • None of the above
Q.19

Names, numbers, and other information needed to solve a problem are called _____

  • program
  • instruction
  • data
  • controls
  • None of the above
Q.20

Conversion of binary number 10010102 to to its decimal number is

  • 7410
  • 9710
  • 7210
  • 6310
  • None of the above
Q.21

How many memory locations canaddress bits access?

  • 16,384
  • 8,192
  • 4096
  • 14
  • None of the above
Q.22

Which of the following is not functionally a complete set?

  • AND, OR
  • NAND
  • NOR
  • AND, OR, NOT
  • None of the above
Q.23

The _____ is ultraviolet-light-erasable and electrically programmable. This allows the user to erase and store until programs and data are perfected.

  • EPROM
  • ROM
  • PROM
  • RAM
  • None of the above
Q.24

What logic function is obtained by adding an inverter to the output of an AND gate?

  • OR
  • NAND
  • XOR
  • NOR
  • None of the above
Q.25

The maximum count which a 6-bit binary word can represent is

  • 36
  • 64
  • 63
  • 65
  • None of the above
Q.26

An odd-parity generator produces an odd-parity bit to go along with the data. The parity of the transmitted data is _____ An XOR gate can test each received word for parity rejecting words with _____ parity.

  • odd, even
  • high, low
  • low, high
  • even, odd
  • None of the above
Q.27

A multiplexer is also known as

  • coder
  • decoder
  • data selector
  • multivibrator
  • None of the above
Q.28

How many bits are required to encode all twenty six letters ten symbols, and ten numerals?

  • 5
  • 6
  • 2
  • 3
  • None of the above
Q.29

ASCII and EBCDIC differ in

  • their efficiency in storing data
  • the random and sequential access method
  • the number of bytes used to store characters
  • their collecting sequences
  • None of the above
Q.30

A NOR gate has two or more input signals. All input must be _____ to get a high output

  • low
  • high
  • some low some high
  • 1's
  • None of the above
0 h : 0 m : 1 s