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Discrete element logic circuits

These circuits are made with diodes or bipolar transistors. Let us take as an example the realization of the 3 basic logical operators.

Realization of the AND:

Realization of the AND

Operation:
Let us consider that the 1 corresponds to the voltage Vcc (5V for example), and the 0 to the mass: GND (ground) = 0V.

   

This operation is indeed that of an ET!

Realization of the OR:

Realization of the OR

Operation: 1 <=> Vcc (5V for example)
0 <=> GND (0V)

   

This operation is indeed that of an OR!

Realization of NO:

Realization of NOT

Operation:
1 <=> Vcc (5V for example)
0 <=> GND (0V)

This operation is indeed that of a NO!

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