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This produced trails of markers making the path of the targets clear. [10] A variety of methods were used to erase the skiatrons. UK radars used fans to cool the tubes which were being heated by the stage lighting of the projectors. Simply turning off the fans made the tube begin to warm up, the erasure taking perhaps 10 to 20 seconds.
Storage tubes are a class of cathode-ray tubes (CRTs) that are designed to hold an image for a long period of time, typically as long as power is supplied to the tube. A specialized type of storage tube, the Williams tube , was used as a main memory system on a number of early computers , from the late 1940s into the early 1950s.
The Williams tube, or the Williams–Kilburn tube named after inventors Freddie Williams and Tom Kilburn, is an early form of computer memory. [1] [2] It was the first random-access digital storage device, and was used successfully in several early computers. [3] The Williams tube works by displaying a grid of dots on a cathode-ray tube (CRT).
There were four general classes of storage tubes; the "surface redistribution type" represented by the Williams tube, the "barrier grid" system, which was unsuccessfully commercialized by RCA as the Radechon tube, the "sticking potential" type which was not used commercially, and the "holding beam" concept, of which the Selectron is a specific ...
5D optical data storage (also branded as Superman memory crystal, [1] a reference to the Kryptonian memory crystals from the Superman franchise) is an experimental nanostructured glass for permanently recording digital data using a femtosecond laser writing process. [2]
The Tektronix 4010 series was a family of text-and-graphics computer terminals based on storage-tube technology created by Tektronix.Several members of the family were introduced during the 1970s, the best known being the 11-inch 4010 and 19-inch 4014, along with the less popular 25-inch 4016.