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The one-bit Gray code is G 1 = (0,1). This can be thought of as built recursively as above from a zero-bit Gray code G 0 = ( Λ ) consisting of a single entry of zero length. This iterative process of generating G n+1 from G n makes the following properties of the standard reflecting code clear:
Systems that use a 4-bit or 8-bit pixel depth can display up to 16 or 256 colors simultaneously. Many personal computers in the later 1980s and early 1990s displayed at most 256 different colors, freely selected by software (either by the user or by a program) from their wider hardware's color palette.
Powers of the 4-bit Gray code permutation (compare A195467) The permutation matrices are arranged in a cycle graph of the cyclic group Z 4 like , but the identity is in the top left position, so that the symmetric matrices are mirrored at the diagonal. Cayley table of the cyclic group (The orange vectors are the same as in the cycle graph.)
This 4-bit RGBI schema is used in several platforms with variations, so the table given below is a simple reference for the palette richness, and not an actual implemented palette. For this reason, no numbers are assigned to each color, and color order is arbitrary. Note that "dark white" is a lighter gray than "bright black" in this example.
This is a list of software palettes used by computers. Systems that use a 4-bit or 8-bit pixel depth can display up to 16 or 256 colors simultaneously. Many personal computers in the early 1990s displayed at most 256 different colors, freely selected by software (either by the user or by a program) from their wider hardware's RGB color palette.
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For the following table: ... Gray code to decimal decoder 16 SN7444A: ... 4-bit shift register, parallel in, parallel out, serial input; different pinout for 74L95 ...