On 1/25/2006 at 12:50 AM ard at p850ug1.demon.co.uk wrote: >> Balanced trinary means place values go up by three each, but instead > >Personally, I prefer negabinary (base -2). It uses 2-state signals, but >the column values are powers of -2 : . . .16, -8, 4, -2, 1 Didn't the 8087 use ternary (base 3) for some of its internal logic? --Chuck