File:HP magnetic card.jpg
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Size of this preview: 800 × 381 pixels. Other resolutions: 320 × 152 pixels | 640 × 305 pixels | 1,024 × 488 pixels | 2,100 × 1,000 pixels.
Original file (2,100 × 1,000 pixels, file size: 805 KB, MIME type: image/jpeg)
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Summary[edit]
DescriptionHP magnetic card.jpg |
English: A magnetic storage card (front and backside) for Hewlett-Packard (HP) programmable calculators HP-41, HP-65, HP-67, and HP-97. The arrows with numbers 1 and 2 on the left and right edges indicate that the card may be used in both directions in order to use the full storage capacity - which was, however, very small with only about 500 Bytes or 0.5 Kilobytes (already using both directions). HP invented these cards with the programmable calculator HP-65 in 1974, which was the first of its kind on the market. The necessity of such a storage device - which would be comparable to the later diskette drives or much later USB memory sticks - was that the main memory (RAM) of the calculator was emptied when the device was powered off, hence all program data and application data was lost, unless stored on such a card. |
Date | |
Source | Own work |
Author | Sciking |
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: removed background, horizontal straightening, technical shadow. Modifications made by Auge=mit.
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Licensing[edit]
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:01, 27 October 2020 | 2,100 × 1,000 (805 KB) | Auge=mit (talk | contribs) | removed background, horizontal straightening, technical shadow | |
06:00, 27 October 2020 | 2,182 × 1,023 (1.12 MB) | Wickipädiater (talk | contribs) | background | ||
01:01, 27 October 2020 | 2,069 × 909 (641 KB) | Wickipädiater (talk | contribs) | +cropped -background | ||
14:54, 16 March 2018 | 3,264 × 2,448 (2.27 MB) | Sciking (talk | contribs) | User created page with UploadWizard |
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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | Motorola |
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Camera model | Moto G Play |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2 |
ISO speed rating | 500 |
Date and time of data generation | 15:48, 16 March 2018 |
Lens focal length | 3.6 mm |
Width | 2,182 px |
Height | 1,023 px |
Bits per component |
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Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop 22.0 (Macintosh) |
File change date and time | 12:56, 27 October 2020 |
Exposure Program | Normal program |
Exif version | 2.2 |
Meaning of each component |
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APEX shutter speed | 4.9068905902692 |
APEX aperture | 2 |
APEX brightness | −1 |
APEX exposure bias | 0 |
Maximum land aperture | 2 APEX (f/2) |
Metering mode | Center weighted average |
Flash | Flash did not fire, compulsory flash suppression |
DateTimeOriginal subseconds | 769158 |
Color space | sRGB |
Scene type | A directly photographed image |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Contrast | Normal |
Saturation | Normal |
Sharpness | Soft |
Geodetic survey data used | WGS-84 |
GPS tag version | 2.2.0.0 |
Date and time of digitizing | 15:48, 16 March 2018 |
Date metadata was last modified | 13:56, 27 October 2020 |
Unique ID of original document | 10C5B982006A1C3E0FCA91CAEFD36A55 |