Logic Gates

Question 1

NOT gate

Answer 1

Outputs the opposite value of the input

Y = A’

Question 2

AND gate

Answer 2

Outputs 1 if both inputs are 1; Otherwise outputs 0

Y = A . B

Question 3

OR gate

Answer 3

Outputs 1 if at least one of the inputs is a 1; Otherwise outputs 0

Y = A + B

Question 4

NAND gate

Answer 4

Outputs 0 when both inputs are 1; Otherwise outputs 1

NOT + AND

Y = ( A . B )’

Question 5

NOR gate

Answer 5

Outputs 1 if both inputs are 0; Otherwise outputs 0

Y = ( A + B )’

NOT + OR

Question 6

XOR gate

Answer 6

Outputs 1 when the number of 1s is odd; Otherwise outputs 0

Y = A’ . B + A . B’