wfdavis@davis-inc.com <wfdavis@davis-inc.com> wrote:

> With all due respect, Gray-codes, also known as cyclic codes, are
> defined as _any_ scheme for mapping the sequence of integers into
> another representation in which successive members differ by one bit
> in the representation.
>
> See Gray-code in, for example, The McGraw-Hill Dictionary of
> Scientific and Technical Terms or Van Nostrand's Scientific
> Encyclopedia.  They define Gray-code as "a" method, not "the"
> method. More particularly, see: Digital Computer Systems Principles
> by Herbert Hellerman, McGraw-Hill, p. 315 (1967).  In his section on
> Encoding, Hellerman makes it explicitly clear that the reflected
> code is but one of many codes that fall under the general definition
> of a Gray-code.

    Thanks for straightening this out, Warren... Like Ray, I was
    under the mistaken impression that there was only one Gray code
    for any sequence of integers.

    My apologies to anyone who was misled by my ignorance.

    -Andy

=== Andrew Warren - fastfwd@ix.netcom.com                 ===
=== Fast Forward Engineering - Vista, California          ===
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