The Museum of HP Calculators
HP Forum Archive 05
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Message #1 Posted by Juan J on 12 Apr 2001, 10:41 p.m.
I just got an HP-15C in a flea market for some $20. Aside from some scratches, it is in good condition. Bought it without batteries, so I installed fresh ones and was ready to go.
The little machine was made in the US in early 1985. I tested it using a favorite of mine, the sine integral. I noted that the time to calculate the integral varies with display format (the more digits, the longer it takes.) A number left in the y register appears to be the uncertainty of approach.
I think I read that calculation time depends on display format. How it depends? Is the algorythm similar to that used on the HP-41 Advantage Pac?
|Re: First Voyager|
Message #2 Posted by Mike (Stgt) on 19 Apr 2001, 7:14 p.m.,
in response to message #1 by Juan J
>> Is the algorythm similar to that used on the HP-41 Advantage Pac? <<
AFAIK: Yes, it is.
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