Serial Number Formats OLD FORM This form was used from the beginning and continued through about 1997. It appeared in some places (e.g., palmtops) as early as 1993. Older serial numbers are of the form: yywwCnnnnn where: yy is the number of years since 1960 ww is the week number of the year (this is computed using HP's fiscal year, which starts 1 November); week 1 is the week that contains the first Monday in November C is the code for the country of manufactur: A USA (possibly North America, but then why M?) B Brazil CN China J Japan M Mexico Q United Kingdom S Singapore ... (see also the 95LX notes on language codes) nnnnn is the sequnce number (origin unknown, likely values: 0 or 1) of the unit produced that week For example, I just received (12 November 1991) a 32SII with the serial number: 3150S07189 This breaks down as: 31 = 31 years since 1960, or 1991 50 = week 50 of HP's fiscal year, so this unit was built during the week of either 14 or 21 Oct 1991 (1 Nov 1990 + 50 weeks = 17 Oct 1991, which is a Thursday) S = Singapore 07189 = sequnce number As can be seen, these numbers make sense. This also means that the unit was built between 14 and 25 Oct in Singapore. It was shipped to the US and then to EduCALC, who immediately sent it to me by ground UPS (the 32SIIs were on back order when I ordered it). Manufacture to customer: 18 - 29 days. Not bad! For -41*s and maybe others, the week code was set ahead by 8. Thus, a unit with a week code of 1945 was manufactured in week 37. In addition, some units handle year wrap improperly, for example 1953 instead of 2001. LANGUAGE OPTION CODES ABA English, US ABB English, International ABD German ABE Spanish ABF French ABJ Japanese ABZ Italian (ABZI?) AC4 Portugese AC6 Korean NEW FORM This information is taken from: http://www.engr.uvic.ca/~aschoorl/faq/48faq-2.html#ss2.20 Newer serial numbers are of the form: ccywwnnnnn where: cc is the country of manufacture using the new, two-letter codes ID Indonesia MY Malaysia SG Singapore y is the last digit of the year of manufacture ww is the week of manufacture (01-53)f nnnnn is the unit number for that week with the first unit on Monday being 00001 For example, if your serial number were SG72706543, the unit was the 6543rd unit manufactured in Singapore during the 27th week of 1997.
I am Craig A. Finseth.
Last modified Saturday, 2012-02-25T17:30:12-06:00.