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What is a...
A byte is a group of 8 bits, strung together.
A bit is either a 1 or a 0. Each byte (8 bits) means something to the computer. The byte "01000001" means the capital letter A. The byte "01000010" means the capital letter B.
"The phrase 'Hello World' is 11 bytes long."
Notes: A byte is a unit of information. Most data in computers is organized and measured in bytes (although the data in a byte is actually stored as eight on/off signals called bits). One byte can represent a character (such as A, 9, ?, or a space), or a value from 0 to 255. Graphics are stored as values for colors and locations of pixels, and they use a lot more bits and bytes than text or numbers.
Your hard drive and memory are measured by how many bytes they can store. For instance, a hard drive might store 100,000,000,000 bytes of data - which would make it a 100-gigabyte hard drive.
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