How do these electrical components work?

Question

Transistor, Moisture Sensor, And gate, Not gate, and Or gate.
How do these function in a circuit, thanks.

Answer 1

a transistor is the building block of active electronic circuits. There are different types:
CMOS p channel and n channel
Bipolar NPN and PNP

All transistors are three lead devices that act in a linear range for amplification, "off", where they do not conduct current, and "on" where they are saturated with current. The current flows from the rain to the source in mos transistors.

A moisture sensor is a small system.

An AND gate is a three terminal device that operates as the logic function
A and B = True
truth table
A B Q
0 0 0
1 0 0
0 1 0
1 1 1

A not gate is a two terminal device that inverts input to output
Q= not A

Truth table
A Q
0 1
1 0

An Or gate is a three terminal device that has the function
A Or B = True

the truth table
A B Q
0 0 0
1 0 1
0 1 1
1 1 0

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