If a transistor is a solid state digital switch, how can it also function as an analog amplifier?

Question

If a transistor is a solid state digital switch, how can it also function as an analog amplifier?

In: 4

Answer 1

Its not exactly a switch, it can just act as one, but it can act in different ways also.

A bjt transistor (one of the most common ones) is essentially two diodes strapped together, and they retain those properties when as a transistor.