File:Country of production (Brazil) and serial number on backside of financial calculator Hewlett-Packard HP-12C, produced 1988 (cropped).jpg

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Country of production and serial number on back of calculator HP-12C, 1988

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Description
English: Backside of Financial Calculator Hewlett-Packard HP-12C built from 1981. The depicted item was produced 1988 in Brazil - Brazil is printed on the back, while the date can be derived by the serial number (top right) by the formula: The first two digits/cyphers of the number are the years which have passed (on the day of production) since the year 1960. As the first two digits of the SN of the device in the image above are 28, the production year is 1960+28=1988.
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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

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Date/TimeThumbnailDimensionsUserComment
current13:40, 15 March 2024Thumbnail for version as of 13:40, 15 March 20241,756 × 539 (552 KB)Pittigrilli (talk | contribs)more contrast, less gamma value
13:37, 15 March 2024Thumbnail for version as of 13:37, 15 March 20241,756 × 539 (572 KB)Pittigrilli (talk | contribs)File:Backside of Financial Calculator Hewlett-Packard HP-12C built from 1981, this item produced 1988.jpg cropped 52 % horizontally, 76 % vertically using CropTool with lossless mode.