The term COMPUTER INFO UNIT can be broken down into two parts: BYTE (4 letters) and UNIT. A byte is a UNIT of digital information that typically consists of 8 bits, and is used to encode a single character of text in a computer. A UNIT is a measure of computing power, which is usually expressed as the number of instructions a computer can execute per second. Together, these two terms refer to a UNIT of computing power that is capable of processing and storing digital information.