Tony Duell wrote:
FWIW, in 1972 the UK magazine 'Practical Electronics' published a design
(going over 10 issuses, I have the whole set) for a TTL-based 4-function
desktop calcualtor. Not a computer, sure, but a lot of the principles
were there.
Those who like to see something special should check
it out : it is a
two-address machine, no instructions, but memory-mapped "functional
units". It even had hardware based multiply and divide !
I'd love to see that, but my Elektor collections starts at about the time
of the first Elekturscope (and I don't have a complete run since then, alas)
-tony
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Hah,
I remember the PE calculator well. I actually built it, though I
restructured the boards to match some proto PCBs I had. To make it easier,
I copied out the articles and bound them together. I saw that binder in the
last few weeks - may have it here in OC. I'll look tonight. It's not a
great copy, but anyone is interested, I'll hit the Xerox at Kinko's. (I
doubt there's enough interest to be worth scanning.)
I have all the English editions of Elektor, but they are not easy to get to.
My garage is a solid mass of books and electronics. When I retire next
year, the top priority is to clean up that mess. eBay will be a full time
occupation for many many months. Some of the stuff is spoken for - I've
promised Al K. he can copy anything he wants before I sell it. I should
probably donate all the software to the Museum, but I still don't feel
positive about their permanence.
Billy