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Starting HP25 programs with numbers
11-24-2017, 02:36 PM
Post: #6
RE: Starting HP25 programs with numbers
(11-24-2017 12:14 PM)Dieter Wrote:  BTW, comparing both machines, it is nice to see what a difference one year makes: The 1976 HP67 already uses 13-digit internal precision while the HP25 still has to rely on merely 10┬ádigits for internal intermediate results. Consequently the infamous 3201 example has only 6 (!) correct digits (after rounding).

I don't think the HP-67 has higher internal precision than the HP-25, both represent a number as 10 digit mantissa and 3 digit exponent with sign. Perhaps the 15-digit HP-67 display suggests a higher precision. It can display the full mantissa all the time, while the 12-digit HP-25 display shares the display between mantissa and exponent, it shows only 8 mantissa digits when an exponent is displayed.

Bernhard

That's one small step for a man - one giant leap for mankind.
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RE: Starting HP25 programs with numbers - PANAMATIK - 11-24-2017 02:36 PM



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