ch 3 Boolean Logic

_____ gate takes only one input.

• AND

• NOT

• OR

• NOR

According to commutative law

• AB=BA

• A=AA

• (AB)C=A(BC)

• A.0=A

A logical expression which is always FALSE for all inputs, is termed as_______

NAND and NOR are called universal gates

• TRUE

• FALSE

According to the distributive law A(B+C)=___________

• A+B+C

• AB+AC

• ABC

• A+BC

According to associative law : ______________

• A+B=B+A

• A=A+A

• (A+B)+C=A+(B+C)

• A+0=A

If an input X is given to am inverter gate ,the output will be: ______

• 1

• 1/X

• XX

Draw truth table of X' and X" (hint 3 columns)

Using truth table prove that (A+B)'=A'B'

The XOR gate produces 0 when ______numbers of 1's are there in input combination.

• odd

• even

• one