WorksheetsLOGIC GATES ECET
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Which logic gate produces an output of 1 only when all inputs are 1?
a)
OR
b)
AND
c)
XOR
d)
NOR
2.
The output of a NAND gate is 0 when
a)
All inputs are 1
b)
Any input is 1
c)
All inputs are 0
d)
Any input is 0
3.
The Boolean expression for an AND gate is
a)
A+B
b)
A.B
c)
A-B
d)
A*B
4.
Which of the following is the universal gate?
a)
OR
b)
AND
c)
NAND
d)
XOR
5.
What is the simplified form of the Boolean expression: A + A·B?
a)
A+B
b)
A.B
c)
A
d)
B
6.
A logic gate whose output is the inverse of the OR gate is
a)
XOR
b)
NAND
c)
OR
d)
NOR
7.
The output of an XOR gate is 1 when
a)
All inputs are 1
b)
All inputs are 0
c)
Inputs are equal
d)
Inputs are different
8.
The complement of A + B is
a)
A’ + B’
b)
A’ . B’
c)
A · B
d)
(A · B)’
9.
The number of rows in the truth table for a 3-input logic circuit
a)
4
b)
6
c)
8
d)
16
10.
Which gate has the output 1 when any one input is 1?
a)
AND
b)
NOT
c)
OR
d)
NAND
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