In most computer systems,
a byte is a unit of information that is eight bits long. A byte is the unit most
computers use to represent a character such as a letter, number, or typographic
symbol (for example, "g", "5", or "?"). A byte can
also hold a string of bits that need to be used in some larger unit for
application purposes (for example, the stream of bits that constitute a visual
image for a program that displays images).