Hi I have uploaded to the photos section four pictures of the Tranistor DC1 , Prototype (really a lash up) I can give more details if anyone is interested. I...
Quit clever Paul. Is there a schematic? I suspect you built R-S flops instead of J-K. When J-K inputs are both active, the output toggles with each clock. It...
... Yeah, but R-S flipflops, at least the kind I know, don't have clocks, they're just a pair of NAND gates. I haven't had the time to figure out just what...
The cross-coupled NAND is an R-S latch (actually an R-not S-not latch). Adding a clock (edge triggered or master-slave) makes it a flip-flop. It is generally...
Hi Ric and Bob I built this a few years back and I don't think even then there was a complete schematic, I'll upload some details component values of ...
Here is the contents in my book of DigiComp I programs. Bill Kustes MORE FUN WITH DIGICOMP I Table of Contents The AND/OR Slider Casino Games Baccarat ...
Hello! I recently acquired a Digi-comp and am looking forward to getting it set up but unfortunately the set lacks two of the springs, part no. 17. Can...
Sorry for the delay. I thought someone with more information would respond. Small rubber (elastic) bands can be used in place of the springs. I've heard that...
Hello Bob, Thank you very much for your suggestions. I have heard back from Glen and am glad to discover that he does still supply springs, so will get them...
Message to the 8 people that have ordered my book, MORE FUN WITH DIGI COMP I: Since the first printing I have edited, refined, and streamlined several pages of...
I just wanted to let the group know that there is an original plastic Digi-Comp 1 for sale on eBay, listed in category: Toys & Hobbies > Vintage, Antique Toys...
Ok, Im sure everyones already thought of this, but I gave in and decided to build a mechanical computer. Yes the terms a bit broad for what I want to...
A mechanical computer is definitely on my "to do" list also. If all you want is addition and subtraction, the Digi-Comp II may be all you need. It also does...
This is not practical to build at home, but search ebay for "CURTA". This is a mechanical computer about the size of a soda can that can add, subtract,...
... My opinion is that you should set up a webpage with a project diary (with plenty of pictures) so that we can all vicariously enjoy the experience. ...
I don't have the skills to build such a thing myself but I'd sure love to see one! I was thinking about how you could build a mechanical equivalent of a CPU,...
You'll have lots of company! I've been planning to do the same thing. The DigiComp2 really intrigues me but looks complicated to build... so perhaps just...
... decided to build a mechanical computer. Yes the terms a bit broad for what I want to construct. ... do addition, subtraction. ... math, as well as basic...
... How about a fully mechanical special-purpose game playing machine? http://www.rci.rutgers.edu/~cfs/472_html/Intro/TinkertoyComputer/TinkerToy.html...
Some years ago I started to build a larger version of Digi Comp I using plexiglass sheet. I pasted together full-size copies of the DCI plate drawings to make...
... I have long been interested in mechanical computation, and have done some research into different designs. Recently I found this page with some mechanisms...
... Lest one be a bit daunted by the ball integrator, many snowblower drive mechanisms are essentially the same thing. On mine, the crankshaft spins a metal...
... That is probably the machine built by Lord Kelvin, actually. I read that it was in active use until the 1960s! This little machine has been making the...
What is the purpose for varying sized marbles? Other engineers and I have not been able to make the "marble = current" analogy work very far. In DCII, marbles...
Thanks for the great references showing variations on marble flops and their use. I glanced at your drawing and had a concern that there wasn't an obvious ...
The difference engine was digital and decimal. If Babbage had used binary and marble flops he could have built the machine on time and under budget. He could...
... binary ... budget. He ... different ... It's not that Babbage was on the wrong track. Omongst other things, Babbage was just too much of a perfectionist....
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