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A BCD digit only uses the binary patterns that represent decimal numbers, ie 0000 - 1001; this requires 4 bits (1 nybble) so there can be 2 BCD digits to a byte. Therefore in 3 bytes there can be 3 × 2 = 6 BCD digits. The largest BCD digit is 1001 = 9.

Assuming non-signed, the maximum 3 byte BCD number is 999,999.

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6y ago
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6y ago

It depends what exact system is used - it seems there are several methods to encode numbers as BCD.For example, if "packed" BCD is used (two digits per byte), and one nibble (half-byte) is reserved for the sign, that allows a total of 5 decimal digits.

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3y ago

999

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Q: What is largest BCD encoded decimal value that can be represented in three bytes?
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