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A byte is a storage unit capable of representing a single character, such as a letter, number or symbol. Technically speaking, a byte is a sequence of binary bits in a serialized data stream in data transmission systems. In most computers, one byte is equated to eight smaller units called bits, although the size of a byte has always been dependent on hardware.
As specified in IEC80000-13 and IEEE 1541, the symbol for byte is an upper-case "B".
A byte is capable of holding a string that is needed in larger application processing. For large amounts of memory, prefixes are added to bytes. For example:
Most computer applications compare size and transfer rates in larger multiples of bytes like kilobytes and megabytes.
Some programming languages also make use of bytes as a data type. For example, C and C++ makes use of bytes as a data type and define bytes as the addressable unit for data storage capable of holding a single character.