Dating a HP calculator Message #1 Posted by Antonio Maschio (Italy) on 20 Apr 2006, 10:30 a.m.
Hi everybody,
According to MyCalcDB,
the Serial Number for old HP calculators should be decoded this way:
Quote:
- The serial number can contain the date :
It is the case for the HP's with a serial number in the WWYYx12345 form. x = country code, WW = fiscal week, YY = year-60 and 12345 is a 'serial' number.
while, according to MoHPC,
the week and year are inverted:
Quote:
Numbers are in the format YYWWC##### where
YY
Is the number of years since 1960.
WW
Is the week (roughly) in which the unit was made. YYWW is not always exact and sometimes may have gone weeks or months without changing.
What should be taken as a consistent method?
Thanks in advance
-- Antonio
Edited: 20 Apr 2006, 10:31 a.m.
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