Binary-coded decimal: Difference between revisions

Revision as of 15:12, 30 December 2004

Revision as of 01:28, 17 January 2005

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==BCD in electronics==

BCD is very common in electronic systems where a numeric value is to be displayed, especially in systems consisting solely of [[digital]] [[logic]], and not containing a [[microprocessor]]. By utilising BCD, the manipulation of numerical data for display can be greatly simplified by treating each digit as a separate single sub-circuit. This matches much more closely the physical reality of display hardware - a designer might choose to use a series of separate, but identical [[7-segment display]]s to build a metering circuit, for example. If the numeric quantity were stored and manipulated as pure binary, interfacing to such a display would require complex circuitry. By working throughout with BCD, a much simpler overall system results.

==Higher-density encoding==