Direct-view bistable storage tube: Difference between revisions
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'''DVBST''' was an acronym used by [[Tektronix]] to describe their line of "Direct-View Bistable Storage Tubes". These were [[cathode ray tube]]s ([[Cathode ray tube|CRTs]]) that stored information written to them using an analog technique inherent in the CRT and based upon the [[secondary emission]] of electrons. (See the discussion of "Analogue Storage" in the [[Oscilloscope#Analogue storage oscilloscope|oscilloscope]] article.) |
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DVBSTs were used for analog oscilloscopes (such as the 603 monitor, the 611 monitor, and the 7623 plug-in mainframe oscilloscope) and for computer terminals such as the archetypical Tek 4010 (the "mean green flashin' machine") and its several successors including the [[Tektronix 4014]]. Portions of the screen are individually written-to by a conventional electron beam, but erasure required erasing the entire screen in a bright flash of green light, leading to the nickname. |
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Some DVBST implementations also allowed the "write-through" of a small amount of dynamically refreshed, non-stored data. This allowed the display of [[cursor (computers)|cursor]]s, graphic elements under construction, and the like on computer terminals. |
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[[Category:Vacuum tubes]] |
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[[Category:Display technology]] |
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[[Category:Television technology]] |
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