Logic Gates AND, OR, and NOT

Definition of Boolean Algebra: a system of algebra in which there are only two possible values for a variable (often expressed as true and false or as 1 and 0) and in which the basic operations are the logical operations AND and OR.

From <https://www.merriam-webster.com/dictionary/Boolean%20algebra>

Uses binary system (o and 1)

0=off or false

1= on or true

AND Gate

• 2 or more inputs and 1 output

• All inputs have to be true for the output to be true

• Symbol /\

Example:

• My name is Billy Jo and I am wearing a top hat.

• My name is Billy Jo and I am a boy.

• My name is Zach and I am wearing a top hat.

• My name is Zach and I am a boy.

OR Gate

• 2 or more inputs and 1 output

• One input has to be true for the output to be true

• Symbol V

Example:

• My name is Billy Jo and I am wearing a top hat.

• My name is Billy Jo and I am a boy.

• My name is Zach and I am wearing a top hat.

• My name is Zach and I am a boy.

NOT Gate

• 1 input and 1 output

• Negates the input or original value

• Symbol -

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