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Binary Coded Decimal is a simple way of encoding decimal digits in binary. Each digit in a number uses four bits (or digits) of binary.

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  1. 1
    Find the first digit in your decimal number. For example in the number 1670, the first digit is 0.
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  2. 2000px Code_BCD.svg 1.png
    2
    Convert that digit into binary. Note that in BCD, each digit is written with four binary digits even if the binary number would usually use less than four digits. So, 0 would usually be written as 0 in binary, but 0 in BCD is 0000 as shown by the image above.
  3. 3
    Decimal to BCD WikiHow.png
    Continue converting each digit in the same way. For example, with the number 1670 the first digit is 0000 the second is 0111 the third is 0110 the last is 0001. Therefore, 1670 would be written as 0001 0110 0111 0000 in BCD.
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Categories: Mathematics

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