Transistors

We use transistors to implement "switches" in electronic circuits.

NMOS Transistor

• One end (vss) is the source connected to ground. the other ends (vg and vdd) are the gate and drain
• When , the transistor is off, and acts as an open switch
• When , the transistor is on, and acts as a closed switch

PMOS Transistor

This diagram may be wrong.