Talk:Four bit adder: Difference between revisions
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:: But the task description does not even mention voltages, nor does it ask us to build up the gates on simulated silicon (or any other such model). Meanwhile, you can build four bit adders using optical or mechanical gates, where voltages are not a meaningful concept. So it's not far to describe this issue as a problem with the implementations in other languages. --[[User:Rdm|Rdm]] 22:27, 30 September 2011 (UTC) |
:: But the task description does not even mention voltages, nor does it ask us to build up the gates on simulated silicon (or any other such model). Meanwhile, you can build four bit adders using optical or mechanical gates, where voltages are not a meaningful concept. So it's not far to describe this issue as a problem with the implementations in other languages. --[[User:Rdm|Rdm]] 22:27, 30 September 2011 (UTC) |
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::: Look, it's not my word: the C example called the inputs "pins" and the assignment statement "V", what was I supposed to infer? The desc does use the word "simulate", btw. I don't really care if you simulate a voltage or water pressure, the matter is task description does seem to want some reasonable simulation despite wasting a lot of effort talking about how one should use bit mask as input/output values. The C code along with some translated code did the task without a remotely systematic way of simulating a circuit (can you verify input pins are all with valid values? how much work is it change the code to do a 128 bit adder instead of 4?), it's ironic to call this a simulation. --[[User:Ledrug|Ledrug]] 23:23, 30 September 2011 (UTC) |
::: Look, it's not my word: the C example called the inputs "pins" and the assignment statement "V", what was I supposed to infer? The desc does use the word "simulate", btw. I don't really care if you simulate a voltage or water pressure, the matter is task description does seem to want some reasonable simulation despite wasting a lot of effort talking about how one should use bit mask as input/output values. The C code along with some translated code did the task without a remotely systematic way of simulating a circuit (can you verify input pins are all with valid values? how much work is it change the code to do a 128 bit adder instead of 4?), it's ironic to call this a simulation. --[[User:Ledrug|Ledrug]] 23:23, 30 September 2011 (UTC) |
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::::Ok, and the task does say "chip" which would also imply electronics. But I would also draw a distinction between other languages in general (some of which have implementations where the 128 bit adder is trivial) and the C implementation in specific (which I have not studied). Still... if the task meant for physics to be simulated, instead of logic, I imagine it would have said something about the way physics was supposed to be simulated? --[[User:Rdm|Rdm]] 01:04, 1 October 2011 (UTC) |
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