[R-390] was: Theory Question now: abacus (OT)

rbethman rbethman at comcast.net
Mon Sep 15 20:33:35 EDT 2008


I never saw any elastic beads with four tours in the Orient, BUT, in the 
mid '80s I saw them being sold to tourists with a calculator built into 
one end.

Dumb tourists buying them too! Not here though. I still have my slide 
rules. Never need batteries or sunshine.

Bob - N0DGN

John Lawson wrote:
>
> On Mon, 15 Sep 2008, Barry wrote:
>
>> I wonder how they represent an irrational number on an Abacus?
> Elastic beads.
>
> Cheers
>
> John KB6SCO

-- 
Bob - N?DGN



More information about the R-390 mailing list