Free Printable Logic Gates

1.

Simple circuits that make logical calculations to get an output are ____.

a)

Truth tables

b)

AND circuit

c)

Logic gates

d)

Half-adder circuit

2.

_____ modifies and processes the input given by the user to get the resulting output to give back to the user.

a)

Truth tables

b)

Adder

c)

Flip flops

d)

Circuits

3.

____ have 2 different outputs, Q and Not Q, which are typically opposites of each other.

a)

XOR

b)

Half adder circuit

c)

SR flip flop

d)

Simple circuit

4.

____ is a constant source of power.

a)

Button

b)

Circuit

c)

Input

d)

Toggle switch

5.

_____ is where any two inputs that are not both 1 produce a 0.

a)

Binary

b)

AND gate

c)

Boolean expression

d)

Output

6.

____ 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

7.

___ is a semiconductor which thousands of millions of tiny resistors, capacitors, and transistors are fabricated.

a)

8-bit adder

b)

Full adder

c)

Logic gates

d)

Integrated circuits

8.

What type of gate is this?

a)

AND

b)

NOR

c)

NAND

d)

XOR

9.

What type of gate is this?

a)

NOT

b)

NOR

c)

XOR

10.

What type of gate is this?

a)

OR

b)

XOR

c)

AND

d)

NAND

11.

Which of these diagrams is correct for an OR gate?

a)

b)

c)

12.

Which of the following gates only takes one input?

a)

AND

b)

OR

c)

NOT

13.

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

a)

AND

b)

OR

c)

NOT

14.

Which gate "reverses" any numbers that pass through it?

a)

AND

b)

OR

c)

NOT

15.

Complete this truth table for an AND gate.

a)

0000

b)

0001

c)

0111

d)

1111

16.

Complete this truth table for an OR gate.

a)

0000

b)

0001

c)

0111

d)

1111

17.

If A was 1 and B was 0 in this circuit, what would Q be?

a)

0

b)

1

18.

Which of the following scenarios is the only one where R would be 0 in this circuit?

a)

If all of the switches were on

b)

If all of the switches were off

c)

If half of the switches were on

d)

If only one of the switches were on

19.

In this circuit, if A and B were both 0, what would R be?

a)

0

b)

1

20.

We generally use A, B, C, D for inputs, but start from P for the first gate. This is because P stands for...

a)

Process

b)

Program

c)

Possibility

d)

Procedure

21.

AND Gate:
If A is OFF but B is ON, the output would be...

a)

ON

b)

OFF

22.

A AND B = Q, If A=1 and B=1 what does Q equal?

a)

1

b)

0

23.

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

a)

1

b)

0

24.

what is a output

a)

y=0

b)

y=1

25.

what is a output

a)

0

b)

1

26.

What is the branch of mathematics that deals exclusively with true and false values?

a)

vector algebra

b)

trigonometry

c)

Boolean algebra

d)

algebraic combinatorics

27.

In 1847, who formalized a "Mathematical Analysis of Logic”?

a)

Lewis Carrol

b)

Bertrand Russell

c)

Isaac Newton

d)

George Boole

28.

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

29.

A NOT takes a single Boolean value, either true or false, and ___

a)

makes it true

b)

makes it false

c)

negates it

d)

keeps it the same

30.

Current flows through a transistor, between electrodes, when electricity is applied to the ___

a)

logic table

b)

control wire

c)

output pin

d)

receiver gate

31.

With a single transistor, if we turn the input on, ___

a)

the output is also on

b)

the output is off

c)

the input is negated

d)

it doesn't do anything

32.

With the output wire attached before a transistor, and the transistor grounded, it acts like ___

a)

a NOT gate

b)

an AND gate

c)

an OR gate

d)

an IF statement

33.

Two transistors connected in series, with two inputs and one output, act like ___

a)

a NOT gate

b)

an AND gate

c)

an OR gate

d)

an IF statement

34.

The only time this statement is false is if both inputs are false.

a)

a NOT gate

b)

an AND statement

c)

an OR statement

d)

an IF statement

35.

Which Boolean operator is built from two transistors in parallel?

a)

NOT

b)

AND

c)

OR

d)

IF

36.

In a circuit diagram, a little arc on a wire indicates ___

a)

that it jumps over another wire, and isn't connected

b)

wires should be soldered together

c)

wires are electrically connected

d)

wires are physically connected

37.

Using an OR gate, if one transistor is on and the other is off, the output is ___

a)

off

b)

on

c)

indeterminate

d)

negated

38.

The only time an XOR is true is when ___

a)

both inputs are false

b)

both inputs are true

c)

one input is true and the other input is false

d)

the output is grounded

39.

Which logic gate is represented by a "spaceship with a smile" ?

a)

NOT

b)

AND

c)

OR

d)

XOR

40.

When we use symbols for logic gates, rather than transistors, we are moving up ___

a)

a row on a logic table

b)

a layer of abstraction

c)

the ladder of complexity

d)

the trophic pyramid

41.

What gate is missing here?

a)

AND

b)

OR

c)

NOT

42.

To complete the truth table, which letter would need to be replaced by a 1?

a)

c

b)

d

c)

e

d)

f

43.

What combination of A and B would you need to turn on X?

a)

A on B off

b)

A and B on

c)

A and B off

d)

A off B on

44.

Which of these is the correct expression?

a)

X = NOT (A /\ B)

b)

X = A /\ B (NOT A)

c)

X = (NOT B) A /\ B

d)

X = (NOT B) A V B

45.

Which of these is the correct expression?

a)

X = A /\ B OR C /\ D

b)

X = A /\ B OR C V D

c)

X = A V B OR C /\ D

d)

X = A V B OR C V D

46.

What would the expression be for this truth table?

a)

A V B /\ C

b)

A V B V C

c)

A /\ B /\ C

d)

A /\ B V C

47.

The numbers below are horizontal; imagine them being vertical.

The correct sequence for X would be ?

a)

0, 1, 1, 1

b)

1, 0, 1, 0

c)

0, 0, 0, 1

d)

0,1, 0, 1

48.

What will the circuit's output be?

a)

1

b)

0

49.

What will the circuit's output be?

a)

1

b)

0

50.

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

a)

0

b)

1

51.

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

a)

0

b)

1

52.

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

53.

Logic statement for $Y_1$

a)

$A\cdot B$

b)

$A+B$

c)

$A\cdot B\cdot C\cdot D$

d)

$C\cdot D$

e)

$A+B+C+D$

54.

Logic statement for $Y_2$

a)

$B+C$

b)

$C+D$

c)

$A\cdot B\cdot C\cdot D$

d)

$C\cdot D$

e)

$A+B+C+D$

55.

Logic statement for $Y_{ }$

a)

$B+C$

b)

$C+D$

c)

$A\cdot B\cdot C\cdot D$

d)

$C\cdot D$

e)

$A+B+C+D$

56.

What is value of Y if A = 1, B = 1, C = 0

a)

1

b)

0

57.

Which truth table is this?

a)

OR

b)

NOR

c)

NAND

d)

AND

Logic Gates

Total questions: 57

Worksheet time: 33mins

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