Logic gates

OR GATE

AND GATE

NOT GATE

Circuit with AND gate

Two switches on, the bulb lights up.

HOWEVER

One switch off and one on the bulb will not light up.

Truth table - AND gate

Made up of binary.The first switch is input A, The second switch is input B. So if input A is off or 0 and input B is off or 0 the bulb will be off or 0. If input A is off or 0 and input B is 1 or on the light bulb will not be on. However if both inputs are on or 1 the light bulb will be on.

Circuit with OR gate