BCD
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Binary coded decimal is a binary representation of decimal numbers where each nibble (4 bits) in a word represents a separate decimal digit.
For example, in BCD, the value 128 is represented in a 32-bit value as:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Binary coded decimal is a binary representation of decimal numbers where each nibble (4 bits) in a word represents a separate decimal digit.
For example, in BCD, the value 128 is represented in a 16-bit value as:
Binary: 0 0 0 0 0 0 0 1 0 0 1 0 1 0 0 0 Decimal: 0 1 2 8
(Note that, in basic binary integer representation, which is the value 296).