Terms Used

### Definitions

**base, radix**: In mathematical numeral systems, the radix or base is the
number of unique digits, including zero, used to represent numbers in a
positional numeral system. For example, for the decimal system
(the most common system in use today) the radix is ten, because it uses the
ten digits from 0 through 9 1.

**binary**: A number system with radix 2, commonly used digital logic circuitry.

**hexadecimal**: A number system with radix 16, widely used by computer
programmers as a human-friendly representation of binary values.

**transistor**: An electrical component used as an electrically-controlled
switch in digital logic circuits 2.

**bit**: A logic 1 or 0 (True or False) in computer circuitry.

**byte**: A combination of 8 bits.

**nibble**: Half of a byte, or 4 bits.