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Abbrevations
Electronics Dictonary
Components
Basic Electronics
Digital Electronics
Fiber Optic Demo's

EXCLUSIVE OR:

Before reading this page read the one on LOGIC GATES.

If you look at the truth table for the OR gate not only does the output go high when A OR B are high but it goes high when A AND B together are high. This can cause problems in some applications.

Therefore the EXCLUSIVE OR or EXOR is used.

The output of the EXOR only goes high when A or B on its own goes high. That is when A or B exclusively goes high.

When A and B are both high the output stays low.

This is shown in the truth table.