On 15-04-06 05:14 PM, Kiran Otter wrote:
I'd be curious what the insides look like.
I had an Olivetti Programma 101 that used delay line memory. It was
frightening the amount of electronics that were in that thing.. before
any kind of ICs existed.
http://www.oldcalculatormuseum.com/c-programma101.html It didn't even
have a display; it used paper tape.. and just had a blue and red light
to indicate if it was working or had reached an error.
My High School math department had a mechanical calculator. Punch in
the numbers and it worked them out on a carriage that went back and
forth like a typewriter.
Natuaraly after school, I told it to diviade by Zero.... Ran for quite
a while before I figured out the way to stop it was to power off, punch
some keys to jam it, power on and press clear.
I used to do my taxes on an Toshiba 14 digit printing calculator that I
got at a government surplus sale. It had been used for a promotional
coin program for the 76 Montreal Olympics judging by the stickers on the
back. two large circuit boards filled with (Toshiba Naturally) TO-5 ICs
no display just a small drum printer. Has a nice keyboard, magnets in
the keys work magnetic reed switches.
--
Charles MacDonald Stittsville Ontario
[email protected] Just Beyond the Fringe
http://Charles.MacDonald.org/tubes
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