What are Bit's and Bytes?

Definition: Bit
1 bit is a binary digit, a single unit in the binary counting system and can be in two distinct states either ON or OFF these can be represented in many ways via electrical signals where a pre determined level will be the high or '1' position and low '0' or off position. There can be no other states in-between these values it is black and white.

E.g. A high level in logic is indicated with a +5V signal and a low level is indicated with a 0V signal.