1.4 Logic gate

Which of the following is the usage of AND gate in daily life

• ATM machine

• Burglar alarm system

• Interior car light system

• Metal detector

If the output of Y=A+B+C+D+E+F=1 then Y=F+E+D+C+B+A=1 also.

• TRUE

• FALSE

A single logic gate can have a maximum of 2 inputs only

• TRUE

• FALSE

How many unique combinations does a 3 bit (3 input variable) have?

• 2

• 4

• 6

• 8

NOT gate is known as an

• Diverter

• Full adder

• Half Adder

• Inverter

OR gate produces a TRUE output when all of the inputs are TRUE and produces FALSE output when any of the inputs are FALSE

• TRUE

• FALSE

AND gate produces a TRUE output when all of the inputs are TRUE and produces FALSE output when any of the inputs are FALSE

• TRUE

• FALSE

What are the basic gates

• NONE

• OR

• AND

• NOT

If Y=X+Y+Z.Y=1 then what is Y'

• 0

• 1

• 2

• 3

A boolean expression can have how many input variables?

• 1

• 2

• 3

• Infinite