25 Nov
2002
25 Nov
'02
4:19 p.m.
On Mon, 25 Nov 2002, Mike Feher wrote:
In the real early 60's I did build a simple
machine that only added. It
essentially consisted of discrete power transistors connected in
cascading flip-flops. Each flip- flop went to a light on the front
panel. The input device was a rotary telephone dial. It sure dazzled my
friends and teachers at school. The input was in decimal form via the
dial and the output had to be interpreted as it was in binary. My first
experience with computers, if you can call it that. Regards - Mike
That's really cool! Especially that you used a rotary telephone dial for
the input. I was thinking that this would have been the perfect
low-tech, low-cost input device for a homebrew computer back at that
time.
Sellam Ismail Vintage Computer Festival
------------------------------------------------------------------------------
International Man of Intrigue and Danger http://www.vintage.org
* Old computing resources for business and academia at www.VintageTech.com *