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Logic Gates
Quiz 1
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Q.1
The difference between OR and XOR Gate
both have 3 inputs
The output of the XOR in case of two ON inputs is 0
OR has 2 inputs and XOR has 3 inputs
They are similar in everything
Q.2
Logc Circuits are formed of
AND Gates
OR Gates
NOT Gates
All of the above
Q.3
The And Gate is represented algebraically by
*
+
-
%
Q.4
(NOT A) AND B = Q, If A=0 and B =what does Q equal?
1
0
Q.5
Why do we make intermediate columns when constructing truth tables?
Because it gets us more marks
Because it's impossible to get the answer without them
Because it makes working out the solution easier
There is no reason to make them
Q.6
The output of any logic gate can have either of two _________ ?
Gates
States
Inputs
Outputs
Q.7
Logic circuit has 4 inputs. How many output combinations are possible?
8
16
32
4
Q.8
What is a logic circuit?
A combination of logic gates that performs a specific function.
A combination of logic gates that understands both binary and decimal number systems.
A combination of logic gates that understands decimal number system.
Q.9
4.A logic circuit has n inputs. How many output combinations are possible?
A.2×n
B.2n
C.n÷2
Q.10
8.An AND gate has two inputs A and B. What is the Boolean expression for this logic gate?
A.A^B
B.A˅B
C.¬A^B
Q.11
AND gates output a 1 if both inputs are 0
True
False
Q.12
OR Gate:IF A is ON and B is ON, the output would be...
ON
OFF
Q.13
How do we get all the inputs for a truth table with 3 inputs?
Guess all the combinations of 1s and 0s
Count up in binary from 000
Count up in binary from 111
Count up in binary from 1
Q.14
How many different combinations of 1 and 0 are possible with 3 bits?
2
4
6
8
Q.15
How many different combinations of 1 and 0 are possible with 1 bit?
1
2
3
4
Q.16
How many different combinations of 1 and 0 are possible with 2 bits?
2
4
6
8
Q.17
True or False:NOT gates output the opposite of the input
True
False
Q.18
True or False:Both inputs need to be 1 for an OR gate to output a 1
True
False
Q.19
The output of a ________ gate is only 1 when both inputs are 1.
OR
NOT
NAND
AND
Q.20
A logic state can only be….
On or 1
Off or 1
1 or 0
In and Out
0 h : 0 m : 1 s
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