Logic Gates are the basic component system that makes up circuits. *FALSE=0 *TRUE=1

• NOT GATE: One input and one output, takes a single input and produce the opposite output. (Input = 1, Output = 0)
  • Logic Notation / X=NOT A
  • Boolean Algebra / X = Ā
• AND GATE: Takes the inputs A and B, then produces the output, X. If both inputs are are 1, then the output will be 1. If both inputs are 0, both output will be 0.
  • Logic Notation / X=A AND B
  • Boolean Algebra / X = A . B
• OR GATE: Takes two inputs, A and B, and produces, output X. If either or both inputs is 1, then the output will be 1.
  • Logic Notation / X=A OR B
  • Boolean Algebra / X=A+

• NAND GATE: Combination of a NOT and AND GATE. Output is the OPPOSITE of AND GATE. Logic Notation / X=A NAND B or Boolean Algebra / Ā.B (Line on top.)
• NOR GATE: Combination of NOT and OR GATE. Output is the OPPOSITE of OR GATE. Logic Notation / X=A NOR B or Boolean Algebra / X = Ā+B (Line on top.)
• XOR (EOR) GATE: Exclusive OR. Both of A and B must be different to be TRUE. Logic Notation / X=A XOR B or Boolean Algebra / X = A (X) B

Combining Logic Gates