Image:Leibnitzrechenmaschine.jpg

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Description
Deutsch: Nachbau einer Rechenmaschine von 1700 von de:Gottfried Wilhelm Leibnitz
English: The Staffelwalze, or Stepped Reckoner, a digital calculating machine invented by Gottfried Wilhelm Leibniz around 1672 and built around 1700, on display in the Technische Sammlungen museum in Dresden, Germany. It was the first known calculator that could perform all four arithmetic operations; addition, subtraction, multiplication and division. 67 cm (26 inches) long. The cover plate of the rear section is off to show the wheels of the 16 digit accumulator. Only two machines were made; this may be a contemporary replica.
Source

recorded by me in de:Technische Sammlungen der Stadt Dresden (with photo permission)
Date
Author

User:Kolossos
Permission
(Reusing this image)

GDFL


[edit] Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation license, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation license".

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Date/TimeDimensionsUserComment
current12:29, 6 July 20062,048×1,536 (1.3 MB)Kolossos (*'''Description:''' {{Information |Description=Nachbau einer Rechenmaschine von 1700 von de:Gottfried Wilhelm Leibnitz |Author=self |Permission= |other_versions= }} *'''Source:''' own recorded in de:Technische Sammlungen der Stadt Dresden (with )
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Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Camera manufacturer SONY
Camera model DSC-P52
Exposure time 1/40 sec (0.025)
F-number f/3.8
Date and time of data generation 15:12, 5 July 2006
Lens focal length 6.3 mm
Orientation Normal
Horizontal resolution 72 dpi
Vertical resolution 72 dpi
File change date and time 15:12, 5 July 2006
Y and C positioning 2
Exposure Program Normal program
ISO speed rating 160
Exif version 2.2
Date and time of digitizing 15:12, 5 July 2006
Image compression mode 4
Exposure bias 0
Maximum land aperture 3.875
Metering mode Pattern
Light source Unknown
Flash 29
Color space sRGB
Custom image processing Normal process
Exposure mode Auto exposure
White balance Auto white balance
Scene capture type Standard