I recently needed to generate some Gray Code, and could find no mention of Frank Gray here... Sychronistically, I was listening to Deltron 3030 this morning, and would like to a mantra and a poem from "Upgrade (A Brymar College Course)" which appears on the DELTRON3030 album, and sample Gray code.

I'll school you on the art and how its texture mapped
Get your act together, my style is mega
Educate the heads of eight lonely beggars
Only shred of evidence is the virtual file
Stored within the cerebellum hit you Berkowitze Style
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MANTRA (repeat): "Upgrade your gray matter, cause one day it may matter."

Code below from http://www.onpedia.com/encyclopedia/gray-code, provided under the GNU Free Documentation License.

my $depth = 16; # generate 16 Gray codes, 4 bits wide each   
my @gray_codes = ( '0', '1' );
while(scalar(@gray_codes)<$depth)
{
      my @forward_half=map{'0'.$_} @gray_codes;  
      my @reverse_half=map{'1'.$_} reverse @gray_codes);
      @gray_codes=(@forward_half,@reverse_half);
}
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