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Worksheets

Logic Gates by Numair Khan

Total questions: 45

Worksheet time: 40mins

Name
Class
Date
1.
Which logic gate is this?
a)
AND
b)
NOR
c)
NOT
d)
OR
2.
Which logic gate is this?
a)
AND
b)
OR
c)
XOR
d)
NOT
3.
Which logic gate is this?
a)
OR
b)
NOR
c)
XOR
d)
NXOR
4.
Which logic gate is this?
a)
NAND
b)
NOR
c)
XOR
d)
NXOR
5.
Which logic gate is this?
a)
NOR
b)
XOR
c)
NXOR
d)
NAND
6.
Which truth table is this?
a)
NOT
b)
AND
c)
OR
d)
NAND
7.
Which truth table is this?
a)
NAND
b)
AND
c)
OR
d)
NOR
8.

What type of logic is this table showing:

a)

AND

b)

OR

c)

NOT

d)

NOR

9.
A truth table lists every possible combination of input and the resulting output
a)
True
b)
False
10.

What type of logic is this table showing:

a)

AND

b)

OR

c)

NOR

d)

XOR

11.
How many inputs of an AND gate need to be 1 to output 1?
a)
3
b)
1
c)
2
d)
none
12.
An OR gate has
a)
Two inputs and one output
b)
One input and one output
c)
One input and two outputs
d)
Two inputs and two outputs
13.

Which gate will output a 1 if any of the inputs are 1?

a)

AND

b)

OR

c)

NOT

14.

Complete this truth table for an AND gate.

a)

0000

b)

0001

c)

0111

d)

1111

15.

There are three fundamental operations in Boolean Algebra: ______

a)

Addition, Subtraction and Multiplication

b)

NOT, AND, and OR

c)

IF, AND, and BUT

d)

IF, ELSE, and ELSE IF

16.
What is the output of an OR gate if the inputs are 1 and 0?
a)
0
b)
1
c)
OFF
d)
2
17.
What is the output of an AND gate if the inputs are 1 and 0?
a)
ON
b)
2
c)
1
d)
0
18.
What is the output of a NOT gate if the inputs is 0?
a)
1
b)
0
c)
OFF
d)
2
19.
The output of any logic gate can have either of two _________ ?
a)
Gates
b)
States
c)
Inputs
d)
Outputs
20.
A truth table lists every possible combination of input and the resulting output
a)
True
b)
False
21.

This Logic Gate is a combination of two gates. Choose which gates.

a)

Not and Or

b)

Not and And

22.

A "not" circuit takes an electrical signal and ____________ it.

a)

flips

b)

erases

c)

multiplies

d)

divides

23.

Complicated circuits take multiple signals and combine them to give different results. True or False?

a)

True

b)

False

24.

An "and" circuit will only give a "1" if the first signal AND the second signal are both.....

a)

1

b)

0

25.

The many different types of circuits that perform simple, logical calculations are called

a)

logic gates

b)

logic bridges

c)

simple gates

d)

"and" circuits

26.

Modern circuits can perform _______________ calculations per second.

a)

billions

b)

millions

c)

hundreds

d)

two

27.

What will the circuit's output be?

a)

1

b)

0

28.

____ is a tabular representation of all the combinations of values for inputs and their corresponding outputs.

a)

Truth tables

b)

Logic gates

c)

Adder

d)

Circuits

29.

The OR Gate has Algebraic presentation of

a)

+

b)

*

c)

-

d)

None of the above

30.

(C AND D) OR (NOT(A OR B)) = Q, If A=1, B=1, C=0 and D=1, what does Q equal?

a)

0

b)

1

31.

Which one of the following gates is not a basic gate______

a)

AND

b)

OR

c)

NOR

d)

NOTNOT

32.

The inverter is__________

a)

an NOR gate

b)

A NOT gate

c)

an AND gate

d)

combination of OR and AND gate

33.

For a two input logic gate, the truth table has 4 possible input combinations. For a 3 input logic gate the number of combinations (entries) in the input side of the truth table are_______

a)

4

b)

6

c)

8

d)

10

34.

The logic expression y = ABC is read as_______

a)

y is equal to A plus B plus C

b)

y is equal to A or B or C

c)

y is equal to A and B and C

d)

y is equal to A dot B dot C

35.

NAND gate is combination of ________

a)

AND gate and OR gate

b)

AND gate and NOT gate

c)

NOT gate and OR gate

d)

AND gate and AND gate

36.

Identify logic gate that has function of sum

a)

AND

b)

OR

c)

NOR

d)

XOR

37.

Which truth table is correct for this logic gate?

a)
b)
c)
d)
38.

Determine the output expression for output X if given

A =1

B = 0

C = 1

a)

X= 0

b)

X= 1

c)

X=A.C

d)

X=B.C

39.

What will the circuit's output be?

a)

1

b)

0

c)

00

d)

11

40.

What is the output Z of this logic cricuit if A = 1 and B = 1

a)

0

b)

1

c)

A

d)

B

41.

What is the output Y of this logic cricuit if A = 1, B = 1, and C = 1

a)

0

b)

1

c)

Y

d)

ABC

42.

List the pulse train at the output of this logic gate

a)

a = 1,b = 0,c = 0,d = 1,e = 0,f = 0,g = 1

b)

a = 0,b = 1,c = 1,d = 0,e = 0,f = 1,g = 1

c)

a = 1,b = 0,c = 0,d = 1,e = 1,f = 0,g = 0

d)

a = 0,b = 0,c = 0,d = 1,e = 1,f = 0,g = 1

43.

What is the Logic Expression for this circuit?

a)

Z = NOT (A AND B)

b)

Z = NOT (A OR B)

c)

Z = (NOT A) AND B

d)

Z = (NOT A) OR B

44.

Which one of the following gate holds the expression as shown

a)

NAND gate

b)

NOR gate

c)

OR gate

d)

NOT gate

45.

The expression for the figure as shown is best describe as (without simplification)

a)
b)
c)