File:PURPLE analog, improved version of March 1944 - National Cryptologic Museum - DSC07847.JPG
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DescriptionPURPLE analog, improved version of March 1944 - National Cryptologic Museum - DSC07847.JPG |
English: Front panel of the U.S. Army analog of the Japanese w:Type B Cipher Machine. This is the improved version of March 1944. The three rows of indicator lights show the position of the rotor in each stage. The plugboard in the center has a second connector wired to the connector on the front panel, presumably to minimize wear and tear on the main connector, as the plugboards are changed frequently. The signal connector and power jack for the output typewriter is to the left of the plug board; the input typewriter connector is at the far right. A six position switch selects the stepping order and buttons on the box at top center apparently are used to set the initial position of each rotor. A framed photograph of the unit with its typewriters is adjacent. Exhibit in the National Cryptologic Museum, Fort Meade, Maryland, USA. All items in this museum are unclassified; items created by the United States Government are not subject to copyright restrictions. |
Date | |
Source | Own work |
Author | Daderot |
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This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
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http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
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current | 18:38, 6 July 2013 | 4,320 × 3,240 (5.07 MB) | Daderot (talk | contribs) | User created page with UploadWizard |
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Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/3.5 |
ISO speed rating | 100 |
Date and time of data generation | 10:38, 29 March 2013 |
Lens focal length | 5.09 mm |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Picasa |
File change date and time | 14:36, 6 July 2013 |
Y and C positioning | Co-sited |
Exposure Program | Normal program |
Exif version | 2.21 |
Date and time of digitizing | 10:38, 29 March 2013 |
Meaning of each component |
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Maximum land aperture | 3.625 APEX (f/3.51) |
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Light source | Unknown |
Flash | Flash fired, strobe return light detected, compulsory flash firing |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
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Unique image ID | 8427a8347be49713c5305d02f9c864c0 |
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