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Commonly used terms in the Electrical industry.
Gray code
a code in which each of a sequence of code words differs by one bit from the preceding one, and the assigned value of each code word is one more than that of the preceding one. Such a code avoids glitches (i.e., sharp momentary unwanted spikes) when, in an electromechanical system, the sensors giving the code words are imperfectly aligned. For example, one possible three-bit Gray code is:
000 001 011 010 110 111 101 100.