BCD to Decimal Conversion | Summary and Q&A

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May 24, 2018
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The Organic Chemistry Tutor
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BCD to Decimal Conversion

TL;DR

Learn how to convert a binary coded decimal into a decimal number by splitting it into groups of four, assigning values to each group, and adding them up.

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Questions & Answers

Q: How do you convert a binary coded decimal into a decimal number?

To convert a BCD into a decimal number, split it into groups of four. Assign values to each group based on the positions of the non-zero bits (8, 4, 2, 1). Add up the values for each group to get the decimal number.

Q: What does each group of four binary numbers in BCD represent?

Each group of four binary numbers in BCD represents a digit in a decimal number. The positions of the bits within the group correspond to the values 8, 4, 2, and 1 respectively.

Q: Are leading zeros significant in a BCD number?

Leading zeros in a BCD number are not significant. They can be omitted when converting the BCD to a decimal number as they do not contribute to the overall value.

Q: Can BCD numbers be converted directly into binary?

BCD numbers can be converted into binary by converting each BCD digit into a 4-bit binary number and combining them. However, the resulting binary number may not necessarily be in the most compact binary representation.

Summary & Key Takeaways

  • Binary coded decimal (BCD) values are broken down into 4-bit numbers, with each group representing a digit in a decimal number.

  • To convert a BCD number to decimal, split it into groups of four, assign values to each group, and add them up.

  • Practice examples: BCD 010110010110 corresponds to 596, BCD 011110000001 corresponds to 781, and BCD 001000000000 corresponds to 2,340.

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