non-binary hardware
Lawrence V. Cipriani
lvc at cbnews.ATT.COM
Sat Sep 10 11:41:59 AEST 1988
>In article <1285 at mcgill-vision.UUCP> mouse at mcgill-vision.UUCP (der Mouse)
>writes:
>By the way, does anyone know of a non-mechanical digital calculator or
>computer that isn't essentially binary?
I heard of a base -2 computer, that was built. For those that don't
know how this would work here is a short table of numbers in base -2.
4 -2 1
-----------------
0 + 0 + 0 = 0
0 + 0 + 1 = 1
0 + 1 + 0 = -2
0 + 1 + 1 = -1
1 + 0 + 0 = 4
1 + 0 + 1 = 5
1 + 1 + 0 = 2
1 + 1 + 1 = 3
It's been so long, I forget where I read about it. As I recall the
authors conclusion was that this technique wasn't worth the trouble.
--
Larry Cipriani, AT&T Network Systems, Columbus OH, cbnews!lvc lvc at cbnews.ATT.COM
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