... I was feeling pedagogical, so I wrote up the development of a program for the riddle and uploaded the text to the Files area. I followed Bob's suggestion...
... The text of the problem reads: Three boys went on a fishing trip. The boys were Rom, Dick and Jim. When they returned they were asked who caught the...
David, Nice little program (in the Files area). It always surprises me when a program works on my machine. -Bob S. In a message dated 6/30/2004 9:44:05 PM...
Great solution! I remember being stumped by the problem when I was 10, then solving it after I took a freshman logic course. The formulas below bring back...
That's why I like logic. Three approaches coming up with the same answers. Uncle Bob has the cleanest solution, but he didn't leave any work for the machine....
Hi Bob S, Thanks for the compliment. The program was written nearly 10 years ago so it doesn't need a very powerful computer to run it. Since I've been looking...
[quote] I will try to scan the R/S version when I find it. Neil [/quote] Sounds great if you would do that. Could you tell me how well it resembles the...
... Please accept my applause as well. ... That would be nice. I recall being told of an "X" slider which joined a pair of the logic rods to the corresponding...
... Very nice! I would have liked having that lecture in my classwork. Are those steel balls in the photographs? The original glass mables that came with mine...
Harrison, You have me interrested in doing some 'enhancements' now to my little project. I might make it a little more attractive now that I have access to...
I had white glass marbles with mine and they worked fine until I took Dr. Nim to the beach one day and sand mucked up the mechanism. Could never get it right...
Harrison, Regarding your question about the 'crash' situation of simultaneously setting/resetting the same flip flop. ... if ((FlipFlopAResetClock exists) and...
Although I didn't do it, I considered using the crash condition (simultaneous set and reset) as a way to indicate a special result or the end of a program. It...
... Yes - as the mechanism has aged it seems that the original white marbles couldn't work their way through the mechanism. (Probably a good cleaning would...
I had two. davange992000 <davange992000@...> wrote:Do you happen to know how many of the 'Y' sliders were provided with the original DigiCompI? ... Do...
I dug out my Cardiac, but I won't be able to scan it for a week or two. There are nearly 60 pages in the manual. I'll have to be creative in scanning the ...
Bob, You may wish to use a digital camera & tripod to shoot hi-def photos of the oversized pages. This has worked well for me copying 12 3/8" x 12 5/16" LP...
I don't think that's a good idea. I've shot some photo's this way for my portfolio and they aren't that crips at all when enlarged. But if you send me the bits...
Judge the quality for yourselves. Here is a link to a photo taken of a 12" x 12" LP cover that I took with a 5 MegaPixel digital camera. I'm no Ansel Adams,...
Ah... Well, that looks quite good. But the LP cover is quite large and there's no reference I can relate to. I've made some photo's with a 35 mm camera, a...
Question: I am expanding my DigiCompI simulator to have 4 flip-flops. I also will be increaing the number of logic rods - but to how many? The original...
Check back to message 685 and the thread that led there. Although the number of logic rods to fully program a four bit version might be over 20, I think your...
... After puttering with 4-bit K maps, I'll promote it to a conjecture -- I'm pretty sure 12+12 are both necessary and sufficient to produce all of the...
Hi all, I've successfully tried to cut a digicomp out of cardboard. I will put it in the image section (hope it won't be resized too much in there). As I had...
I am just puting on the finishing touches to an expanded DigiComp with 4 flip flops. It has 18 logic rods - I would put more if I can find a neat way to fit it...
Finally finished an update of my DigiCompI simulator. You will find a zip for it in the files section. The 'classic' DigiCompI now has 'Y' sliders (the grey...
Thanks, davange992000. Works a lot faster than programming by hand. Btw I noticed that the hardwired counter in the first program was in error when I tried to...
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