Photo Questions

From: Scott Stevens <>
Date: Tue Jan 4 18:27:36 2005

On Tue, 4 Jan 2005 16:13:08 -0800 (PST) (Al Kossow) wrote:

> > Al, are you indicating that a) your copy of the book has been scanned
> correct. I'm not sure I'm comfortable with putting it on line, however.
> also, it is a VERY strange book. I pulled it out again just to refresh
> my memory about just exactly what they were trying to do with this project
> while you could consider it a 'computer', it is not an 'automatic computer'
> every switch (all those little things made from paper clips) are operated
> manually.

My Digi-Comp was all operated manually, back in aprox. 1970 when I had one.

The first _electornic_ computer I ever wanted to build was one that was basically a cascade of flip-flops made into an up counter. The input device was a telephone dial. For some reason, the author of the book designed it to use multiple big TO-3 package 2N3055 transistors per flip-flop stage, which priced it WAY out of my school-kid budget at the time. Looking back, it's pretty ridiculous that it wasn't designed around little cheap transistors, i.e. 2N2222 parts.

Yikes. Serious topic drift. Sorry.

Received on Tue Jan 04 2005 - 18:27:36 GMT

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