Logic Gates

NAND Gate :

it is logic gate, any input is low then output is high.

single word : compliment of and gate

NOR Gate :
it is logic gate, any input is high then output is low.

single word : compliment of or gate.

XOR Gate :

it is a logic gate, which performs exclusive or operation.

single word : output is high only when two inputs different.

XNOR Gate :
it is a logic gate, which performs exclusive nor operation.

single word : output is high only when two inputs same.

Logic Gates

Logic Gates :
A logic gate is an idealized or physical device implementing a Boolean function; that is, it performs a logical operation on one or more logical inputs, and produces a single logical output.
Logic gates are primarily implemented using diodes or transistors acting as electronic switches

AND Gate :
The AND gate is a basic digital logic gate that implements logical conjunction.

AND GATE

Single word : Output high only when all inputs high.

OR Gate :

The OR gate is a digital logic gate that implements logical disjunction.

OR GATE

Single word : Output high only when at least one  inputs high.


NOT Gate :

NOT gate is a logic gate which implements logical negation.

Single Word : Output is inversion of input.

Basic Elements

Diode :

      A diode is a basic electrical device which is used as rectifier which converts an alternating current into a direct one by allowing a current to flow through it in one direction only.
     

Diode

Transistor :

. A bipolar transistor has terminals labeled base, collector, and emitter. A small current at the base terminal (that is, flowing between the base and the emitter) can control or switch a much larger current between the collector and emitter terminals. For a field-effect transistor, the terminals are labeled gate, source, and drain, and a voltage at the gate can control a current between source and drain.

BJT :

FET :