HP Forum Archive 05

[ Return to Index | Top of Index ]

hp-20s Message #1 Posted by Peter Cerutti on 30 Apr 2001, 9:02 a.m. Can anyone help me out?! I've acquired a hp-20s. On the back of the calculator it says 1987 Singapore. I thought production of this calculator didn't start till 1989 or 1990 at the earliest. Can someone tell me what's going on?

Re: hp-20s Message #2 Posted by Y. Samuel Arai on 30 Apr 2001, 3:03 p.m., in response to message #1 by Peter Cerutti All of the Pioneer series (20S, 10B, 17B, 17BII, etc.) has that identical HP Copyright date on the back. Your date of manufacture is in the serial number. Take the first two digits of your serial # and add it to 1960, and you get the manufacture date. E.g., my 20S has 3452S84XXX on it, so 1960 + 34 = 1984. Sam

Re: hp-20s Message #3 Posted by Y. Samuel Arai on 30 Apr 2001, 5:40 p.m., in response to message #2 by Y. Samuel Arai Ok I can't do math... 1960 + 34 = 1994, NOT 1984! Good thing I have HP calculators to do my math for me... :-)

[ Return to Index | Top of Index ]

Go back to the main exhibit hall