File:HES IBM 2250 light pen grlloyd Oct1969.png

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Captions

Captions

IBM 2250 display with light pen and text from Hypertext Editing System (HES)

Summary

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Description
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 location41° 49′ 33.24″ N, 71° 23′ 55.68″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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Date/TimeThumbnailDimensionsUserComment
current20:19, 14 June 2020Thumbnail for version as of 20:19, 14 June 20204,789 × 3,293 (13.05 MB)Grlloyd (talk | contribs)Better scan after cleaning watermarks from 35mm black and white negative
17:43, 14 June 2020Thumbnail for version as of 17:43, 14 June 20206,000 × 4,180 (16.79 MB)Grlloyd (talk | contribs)Uploaded own work with UploadWizard

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