Binary Coded Decimal

A number system where each decimal digit is separately represented by a 4-bit binary code;
for example
the decimal number 23 is represented as 0010 0011 (2 = 0010 and 3 = 0011, grouped together as shown), while in straight binary notation, 23 is represented as 10111.

See also: Binary Coded Digit, Offset Binary Coding, Signed Binary Coding.

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Subjects: Computing Mathematics