Date: Tue, 27 Nov 2007 16:49:10 -0700
From: woodelf <bfranchuk at jetnet.ab.ca>
Subject: Re: IBM mechnical devices
M H Stein wrote:
> But I didn't have anything as modern as a 407;
In My Day we only had 402s!!!
> BTW, my claim to fame was making it multiply; they said it couldn't be done,
so...
Has look up " 402 IBM " on the web. That is
old stuff, a little more on topic than
what I have seen lately.
> Haven't seen any with peripherals on eBay
lately though...
So how many of the those old beasts are still around?
Ben alias woodelf.
PS. How did you get it to multiply?
----------
Actually, I think there are a few still around, but by the time you add all the
necessary "peripherals" you've filled a large room...
Don't ask me to do it today, but it was the "add and shift" method used by
most mechanical calculators. Doubt if I still have the "coding form" though
(lots of little circles connected with lines drawn to represent wires; a *real*
machine language, none of that wussy octal & hex nonsense of Kids Today...)
m