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File:HP-15C Calculator Backside.jpg

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English: Programmable Calculator HP-15C, 1980ies, Backside with Error Codes etc. On the upper rim of the backside, it can be seen that this item was produced in the USA (engraved letters in the middle) in the year 1987 (number engraved on the right side beginning with 27, meaning the production year is 1960+27=1987).
Deutsch: Taschenrechner HP-15C, 1980er Jahre, Rückseite mit Fehlercodes etc.
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Author Pittigrilli
Other versions Derivative works of this file:  HP-15C Calculator Backside-2.jpg

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current16:01, 25 February 2013Thumbnail for version as of 16:01, 25 February 20133,264 × 2,448 (2.4 MB)Pittigrilli (talk | contribs){{Information |Description ={{en|1=Programmable Calculator HP-15C, 1980ies, Backside with Error Codes etc.}} {{de|1=Taschenrechner HP-15C, 1980er Jahre, Rückseite mit Fehlercodes etc.}} |Source ={{own}} |Author =[[User:Pittigrilli|P...

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