lookin' good
Charles Hallenbeck
chuckh at mhonline.net
Sat Aug 18 12:03:10 EDT 2001
> A 21-rod abacus?! Hey, now that's cool! Only ones I've ever seen were
> of the 13-rod variety.
I guess this was a double precision item! <smile> Actually you could do
separate problems on different regions of it - sort of like opening
another console on Linux!
The Chinese abacus with 5+2 beads is not hex, just decimal. You can
postpone the carry that way, although I am not sure any more why you would
want to do that. I bought that thing in a Chinese restaurant in Cleveland
which also did imports, and it came with an instruction manual written in
a kind of pigeon English that was right out of an old Charlie Chan movie -
a real riot.
With all those rods I guess you could call it a Fortran machine!
Visit me at http://www.mhonline.net/~chuckh
The Moon is New
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