Which of the number is not a representative of hexadecimal system
Select correct option:

“1234”

“ABCD”

“1001”

“DEFH”



High level Noise Margins (VNH) of CMOS 5 volt series circuits is _____________
Select correct option:

0.3 V

0.5 V

0.9 V

3.3 V


To get the answer “1” in Boolean addition of three variables, ________
Select correct option:

All three variables must be 1

One of the variables must be 1

All three variables must be 0

Any two variables must be 1



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The 3-variable Karnaugh Map (K-Map) has _______ cells for min or max terms
Select correct option:

4

8

12

16


________ is invalid number of cells in a single group formed by the adjacent cells in K-map
Select correct option:

2

8

12
16




Consider A=1,B=0,C=1. A, B and C represent the input of three bit NAND gate the output of the NAND gate will be _____
Select correct option:

Zero

One

Undefined

No output as input is invalid


The Binary number 1011.101 has an Integer part represented by _____ and a fraction part ____ separated by a decimal point.
Select correct option:

1011, 101

101, 1011

101, 1101
10111, 11




1011+101 = ______
Select correct option:

10000

00001

10011

11001

Adding two octal numbers “36” and “71” result in ________
Select correct option:

213

123

127

345


The first Least Most digit in decimal number system has
Select correct option:

Has position 0 and weight equal to 1

Has position 1 and weight equal to 0

Has position 1 and weight equal to 10

Has position 0 and weight equal to 10

Sum term (Max term) is implemented using ________ gates
Select correct option:

OR

AND

NOT

OR-AND





The OR Gate performs a Boolean _______ function
Select correct option:

Addition

Subtraction

Multiplication

Division





Adding two octal numbers “36” and “71” result in ________
Select correct option:

213

123

127

345





If we multiply “723” and “34” by representing them in floating point notation i.e. by first, converting them in floating point representation and then multiplying them, the value of mantissa of result will be ________
Select correct option:

24.582

2.4582

24582

0.24582





NOR Gate can be used to perform the operation of AND, OR and NOT Gate
Select correct option:

TRUE

FALSE

The three fundamental gates are ___________
Select correct option:

AND, NAND, XOR

OR, AND, NAND

NOT, NOR, XOR

NOT, OR, AND




A SOP expression having a domain of 3 variables will have a truth table having ____ combinations of inputs and corresponding output values.
Select correct option:

2

4

8

16





The 4-variable K-Map has ________ rows and ___________ columns of cells.
Select correct option:

2, 2

2, 4

4, 2

4, 4




NAND gate is form by connecting _________
Select correct option:

AND Gate and then NOT Gate

NOT Gate and then AND Gate

AND Gate and then OR Gate

OR Gate and then AND Gate