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U20

Project 6: Exclusive OR (XOR) Gate

This circuit demonstrates how the Exclusive

OR (XOR) Gate (U20) works. Turn the slide

switch (S1) on. Connect the loose ends of

the red and black wires to either low voltage

(denoted as a “0”) or high voltage (denoted

as a “1”). If input A and input B are

exclusive (i.e. different), then the Q output

on U20 will be high (1), and the red LED (D1)

will be on.

XOR gates are used in digital logic circuits to perform a comparison. When the inputs are mutually exclusive

(i.e. different), then the output is high (1). When the inputs are the same, then the output is low (0).

Input (A) Input (B) Output (Q)

0 0 0

0 1 1

1 0 1

1 1 0

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 41 42

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Elenco Understanding Logic Gates and Circuits Manuale Utente Pagina 13