Ok, I understand the structure of traditional serial numbers for HP calculators. But what about the new format ? Those numbers that begin with IDxxxxxx or these with CNxxxx. Those Chinese numbers are quite strange ! They are too low to really individually identify several calculators manufactured in a high volume production line. For instance, s/n for my HP9S is CN0246 and for my 9G it is CN0248. One of my HP17BII's s/n is ID04901440. What to this all mean ?
Decoding new serial numbers
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