Ask a computer to store a decimal whole number in binary and it will do it without any fuss. A decimal fraction, however, that’s another thing. In this episode, we will present a method called Packed BCD that is used to accurately represent decimal values in binary by storing each digit in its own nibble.
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Tarnoff, David, "Episode 2.4 – Packed BCD: Taking More Nibbles out of Binary" (2020). Computer Organization and Design Fundamentals Series. https://dc.etsu.edu/computer-organization-design-oer/10