Binary - A number system that uses only 0 and 1., Denary - The normal number system we use every day, using digits 0–9., Hexadecimal - A number system that uses 16 symbols: 0–9 and A–F., Base - The number of different digits a number system uses (for example 2, 10 or 16)., Base two - Another way of saying the binary number system (base 2)., Base ten - Another way of saying the denary number system (base 10)., Base sixteen - Another way of saying the hexadecimal number system (base 16)., Bit - The smallest unit of data, a single 0 or 1., Nibble - A group of 4 bits., Byte - A group of 8 bits., Kilobyte (KB) - About 1,000 bytes of data (actually 1,024 bytes in computing)., Megabyte (MB) - About 1,000 kilobytes of data (1,024 KB in computing)., Place value - The value a digit has because of its position in the number (for example in 1010₂, the columns are 8, 4, 2, 1)., Binary addition - Adding binary numbers together using rules like 1 + 1 = 10₂, often with carries to the next column., Binary subtraction - Taking one binary number away from another, sometimes needing to borrow from the next column.,

Number Systems and Data Units

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