File:HES IBM 2250 light pen grlloyd Oct1969.png
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[edit]DescriptionHES IBM 2250 light pen grlloyd Oct1969.png |
English: IBM 2250 Model IV Graphics Display Unit showing screen text and light pen. Brown University 'Hypertext Editing System' (HES) Oct 1969. Demonstrated by: Chris Braun, Brown Computer Science student. Photo by Greg Lloyd. |
Date | |
Source | Own work |
Author | Gregory Lloyd |
Camera location | 41° 49′ 33.24″ N, 71° 23′ 55.68″ W | View this and other nearby images on: OpenStreetMap | 41.825900; -71.398800 |
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[edit]I, the copyright holder of this work, hereby publish it under the following license:
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:19, 14 June 2020 | 4,789 × 3,293 (13.05 MB) | Grlloyd (talk | contribs) | Better scan after cleaning watermarks from 35mm black and white negative | |
17:43, 14 June 2020 | 6,000 × 4,180 (16.79 MB) | Grlloyd (talk | contribs) | Uploaded own work with UploadWizard |
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Date and time of data generation | 15:10, 18 April 2020 |
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Camera model | OpticFilm 8200i |
Camera manufacturer | Plustek |
PNG file comment |
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Image height | 3,348 px |
Image width | 4,884 px |
Date and time of digitizing | 15:10, 18 April 2020 |
File change date and time | 03:54, 19 April 2020 |
Horizontal resolution | 1,417.32 dpc |
Vertical resolution | 1,417.32 dpc |