File:HP-15C Calculator Backside (edited, changed perspective to plan).jpg

DescriptionHP-15C Calculator Backside (edited, changed perspective to plan).jpg	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.
Date	26 February 2013, 10:54 (UTC)
Source	This file was derived from: HP-15C Calculator Backside.jpg:
Author	HP-15C_Calculator_Backside.jpg: Pittigrilli derivative work: Hic et nunc derivative work of derivative work: Pittigrilli
Permission (Reusing this file)	This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: changed viewing angle/perspective so that device is seen from above and rectangular, removed background, reduced shiny areas, white balance. The original can be viewed here: HP-15C Calculator Backside-2.jpg: . Modifications made by Pittigrilli.
Other versions	This file has been extracted from another file : HP-15C Calculator Backside-2.jpg

Camera location	48° 08′ 10.94″ N, 11° 33′ 57.51″ E	View this and other nearby images on: OpenStreetMap	48.136373; 11.565975

This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: cut out, colour, contrast, sharpness. The original can be viewed here: HP-15C Calculator Backside.jpg: . Modifications made by Hic et nunc.

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This image is a derivative work of the following images:

• File:HP-15C_Calculator_Backside.jpg licensed with Cc-zero
  • 2013-02-25T16:01:54Z Pittigrilli 3264x2448 (2513495 Bytes) {{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

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