Elenco Understanding Logic Gates and Circuits Manual de usuario descargar pdf (Pagina 8)

Project 1: NOT Gate (Inverter)

Input (A) Output (Q)

0 1

1 0

U15

This circuit demonstrates how the NOT

Gate (U15) works. Turn the slide switch

(S1) on. Connect the loose end of the

red wire to either low voltage (denoted

as a “0”) or high voltage (denoted as

“1”). If input A is low (0), then the Q

output will be high (1), and the red LED

(D1) will be on. If input A is high (1),

then the Q output will be low (0) and

the red LED will be off.

NOT gates are used in digital logic circuits to “invert a voltage level”. A high voltage level (1)

into the NOT gate becomes a low voltage level (0) at the output and vice versa.

The inversion of a state is often

represented with a bar over the

variable, so Q = A.

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Elenco Understanding Logic Gates and Circuits Manual de usuario Pagina 8