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-
-
- { ------------------------------------------------------------------
-
- This file is a translation of diagram on page 68 of the 1979 E. P.
- Dutton paperback edition of G. Spencer-Brown's "The Laws of Form".
-
-
-
- 0 indicates the unmarked state
-
- 1 indicates the marked state
-
- eg: -----|
- a b | translates to /(a + b)
-
- if a and b are leads entering a marker the value indicated
- by the marker is also /(a + b)
-
- u represents the wave structure at the marker at the top left,
- v represents the wave structure at the next leftmost marker, and
- w represents the wave structure at the rightmost unlabelled marker
-
- other letters are as used in "The Laws of Form".
-
-
-
- Since this system has no reset you will have to use the cheat feature
- (hold the control key down whilst pressing 1 or 0) to get it out of a
- totally undetermined state. If you set the signals as follows you will enter
- a determined state.
-
- Signal Set to
- ====== ======
-
- v 0
- w 0
- d 1
- c 0
- u 0
- i 0
- a 1
-
- p Leave unset
-
-
-
- ------------------------------------------------------------------ }
-
-
-
- ! v, w, d, c, u, i, a = 1, p;
-
- v = /( a + u + w );
- w = /( a + v + d );
- d = /( v + w + c );
- c = /( w + d + i );
- i = /( c + v + d );
- u = /( v + w + d );
-
- p = c; { p: the output is the state of marker c }
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-