JOHNNIAC Selectron tube

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  • Details
  • Description
Date Introduced
1953
Photographer
Richards, Mark
Dimensions
3 x 9 x 3 in.
Manufacturer
Radio Corporation of America (RCA)
Credit Line
Gift of Fred Gruenberger
Copyright Owner
© Mark Richards
Location
US
Keywords
Vacuum tube; Electronic; mechanical
Object ID
X281.83
Memory Type
Special vacuum tube

Originally designed to hold 4096 bits, the tubes RCA could actually produce held just 256 bits. Each bit was as an isolated stored charge that was continuously regenerated.