HP Forum Archive 01

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What is coma mode ([ON] [SPC]) in the HP48SX ? Message #1 Posted by Tal on 2 Nov 1999, 4:13 a.m. I will appreciate it very much if someone can explain to me what is the difference between coma mode ([ON] [SPC]) to calculator off in the HP48SX. Thank you very much, Best regards, Tal. email: td@chem.ch.huji.ac.il

Re: What is coma mode ([ON] [SPC]) in the HP48SX ? Message #2 Posted by Reinhard Hawel on 2 Nov 1999, 9:21 p.m., in response to message #1 by Tal AFAIK this is a much deeper sleep than the OFF mode. As you can easily test, even the real time clock is halted in this mode. Memory contents are preserved. This seems to be a tool for HP to keep batteries fresh in the shelves, so that the user can wakeup the machine after lying some months (or even years) somewhere in a store. Other HP calculators seem to have similar modes, but I may be completely wrong at this point.

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