3 ms·
> Back in his lab, he entered the sketched coordinates—called bézier > control points, first used in the design of automobile bodies—on a > Tektronix storag
by kps 11y ago
> Back in his lab, he entered the sketched coordinates—called bézier
> control points, first used in the design of automobile bodies—on a
> Tektronix storage tube, an early computer memory.
Urg. Not a ‘memory’ in the computer sense, not being readable by the computer. What this means is that he used a Tektronix graphics terminal that had a self-persisting CRT display.¹
¹ https://en.wikipedia.org/wiki/Direct-view_bistable_storage_tube https://en.wikipedia.org/wiki/Direct-view_bistable_storage_t...
Edit: Teapot on a Tektronix 4014: https://youtu.be/bZOrL7f1-kE https://youtu.be/bZOrL7f1-kE
- leoc 11y agoArguably it's a real example of the fabled Write-Only Memory. :)
- tdeck 11y agoIncidentally, there was in fact CRT-based RAM at one time: https://en.wikipedia.org/wiki/Williams_tube?wprov=sfla1 https://en.wikipedia.org/wiki/Williams_tube?wprov=sfla1
- duncanka 11y agoOriginal author here. Thanks for catching this; the mistake was introduced in the editing process. Should be fixed now.