![]() ![]() Apple needed to have at least a base-27 (not base-26) number system for this to work, because there are more than just 52 weeks per year. ![]() (before the change, 11 digit numbers were computer serials, 12 digit were service part serials, now 12 is computer, and iirc 17 or 18 are part)Īs my notes indicate, I don't know what will happen in 2018. # or will X be skipped and 0 be used for early 2018? # how apple interprets years when it hits 2018 is unclear. # (all years have 52 weeks plus one or two days, so the system must be able to handle 54 weeks) (either starting with the first or 28th week) # the week code is the number of weeks offset from the year. # the year starts in early 2005 with 0, 1 is late 2005, 2 is early 2006, M is early 2014, etc # the number notably does not include vowels AEIOU, and consonants BSYZ # apple is using a "base-27" numbering system for year and week, the digits are: 123456789CDFGHJKLMNPQRTVWX # week is two digits, 00 through 51, week of year repeats every 10 years, "4" could be 1994 or 2004 etc So I got that itch again this morning, and actually managed to dig up enough information that I could tease out the full rules for Apple's new serial number format ![]()
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