Storage tube
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Storage tubes are a class of cathode-ray tubes that are designed to hold an image for a long period of time, typically as long as power is supplied to the tube.
The Tektronix 4014 uses a storage tube for its display.
RCA 6499 Radechon tube used for electrostatic storage in SAGE computers
Williams tube
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The Williams tube, or the Williams–Kilburn tube named after British inventors Freddie Williams and Tom Kilburn, is an early form of computer memory. It was the first random-access digital storage devi
Storage tube
…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. They were replaced with other technologies…
A Williams (or Williams-Kilburn) tube on display at The National Museum of Computing on Bletchley Park, Buckinghamshire
James Pomerene with a Williams–Kilburn tube, a 5CP1A cathode ray tube, used in the memory array of the IAS computer c. 1951
Williams–Kilburn tube from an IBM 701 at the Computer History Museum, in Mountain View, California
Memory pattern on SWAC Williams tube CRT