Bit-- Abbreviation for "binary digit". The fundamental storage unit of computer memory, a bit has one of two values: 0 or 1.
Byte-- A unit of memory containing 8 bits.
Word -- A unit of memory containing 16 bits (2 bytes).
Doubleword -- A unit of memory containing 32 bits (4 bytes; 2 words).
Quadword-- A unit of memory containing 64 bits (8 bytes; 4 words).
Paragraph-- A unit of memory containing 128 bits (16 bytes; 8 words).
ASCII -- Abbreviation for "American Standard Code for Information Interchange". A standard code, used to store textual characters in memory, in which each character is represented by a unique 8-bit pattern.
Decimal system-- Our everyday system of arithmetic, also called base 10, based on the ten digits 0 through 9.
Base 10 -- See Decimal system.
Binary system-- A system of arithmetic used with computers, also called base 2, that is based on the digits 0 and 1.
Base 2 -- See Binary system.
Hexadecimal system-- A system of arithmetic used with computers, also called hex or base 16, that is based on sixteen digits. To represent sixteen digits, the hexadecimal system uses 0 1 2 3 4 5 6 7 8 9 A B C D E F.
Base 16-- See Hexadecimal system.
Hex -- See Hexadecimal system.
Kilobyte-- A unit of memory containing 1024 bytes (1024 = 210).
K byte -- Abbreviation for "kilobyte".
KB-- Abbreviation for "kilobyte".
Megabyte-- A unit of memory containing 1,048,576 bytes (1,048,576 = 220); 1 megabyte = 1024 kilobytes.
M byte -- Abbreviation for "megabyte".
MB-- Abbreviation for "megabyte".