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Mathematics
Boolean Algebra
f-alpha.net » Mathematics » Algebra » Boolean Algebra » Let's go... » Experiment 3 - OR Operation

Experiment 3 - The OR Operation (Disjunction)

You can picture the behavior of an OR operation with the switch model and register the result Q in the truth table...

Switch model of the OR operation.

A B Q
0 0 0
0 1 1
1 0 1
1 1 1

Truth table OR operation.

In logic equations the operator \(\vee\) is used for the OR operation...

$$Q = A \vee B$$

(Speaking: A or B).

Logical symbol of the OR operation.

With the C-MOS IC 4071, you build an OR operation...

Circuit diagram OR operation.

Circuit OR operation. (Enlarge)

Logical Sum

Mathematically the OR operation is similar to the addition and is therefore also known as logical sum.

Therefore, you will find variations of the logic equations...

$$A \vee B \equiv A + B$$

Next the NOT operation...

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