NUMBER SYSTEM TERMS


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".


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