Timeline for answer to How to design a circuit that outputs the binary position of the 3rd set bit from the right in an 8-bit input? by periblepsis
Current License: CC BY-SA 4.0
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| Sep 27, 2025 at 15:30 | comment | added | periblepsis | @HPrice It's a fine line to tread at times, but your perspective is the one that expresses my own self-examination before deciding to write and the conclusion I'd also reached. Thanks for letting me know I'm not the only one. ;) | |
| Sep 27, 2025 at 15:23 | comment | added | H Price | Keeping in mind the OP is a student and the intent of the question (as it was posed to them) was to provoke thought and problem-solving, this answer is probably best. It demonstrates combinatorial and sequential solutions using basic building blocks, which is where they are currently at in terms of their studies. It does give them the proverbial fish, but hey we've all been there - as long as something is learned. | |
| Sep 26, 2025 at 14:12 | comment | added | greybeard | I'm suggesting a trivial improvement. | |
| Sep 26, 2025 at 11:53 | comment | added | periblepsis | @greybeard Both schematics work well in simulation. That doesn't mean much. And I certainly don't want to lead anyone astray. But are you suggesting an error? Or an improvement? Or something else? (Sorry for being dense, but I just wrote up to let dogs out before going back to sleep.) | |
| Sep 26, 2025 at 11:00 | comment | added | greybeard | A third bit set implies a second and first bit had been set: I think the and should always equal the third valid. (See TonyM.'s answer, too.) | |
| Sep 26, 2025 at 8:14 | comment | added | periblepsis |
@greybeard Can you elaborate a little? Is that just a reference to an earlier comment I made elsewhere about 000 and 001? Or something else? I'm off to sleep so I may be late in addressing further comments...
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| Sep 26, 2025 at 7:19 | comment | added | greybeard | Why and "valid" outputs? | |
| Sep 26, 2025 at 7:02 | history | edited | periblepsis | CC BY-SA 4.0 |
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| Sep 25, 2025 at 22:36 | history | edited | periblepsis | CC BY-SA 4.0 |
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| Sep 25, 2025 at 22:23 | history | rollback | periblepsis |
Rollback to Revision 1
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| Sep 25, 2025 at 22:17 | history | edited | periblepsis | CC BY-SA 4.0 |
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| Sep 25, 2025 at 20:49 | vote | accept | Fourier_Asker | ||
| Sep 25, 2025 at 20:49 | comment | added | Fourier_Asker | Wow, very much appreciated. Tried to understand now but due to tireness, I can't really understand now. I will go to sleep now and wake up tommorow and try to understand it better. But this is the more intuitively one I saw here, Thanks!! But just a quick question, what adder is there? I tried to understand and couldn't really see any adder here | |
| Sep 25, 2025 at 18:56 | history | answered | periblepsis | CC BY-SA 4.0 |