The tub file was an early, primitive random access memory technology in which pre-punched punch cards that contained frequently used information were stored in a file for reuse. Usually such tub files would contain a series of related data — one for each item sold in a store, for example — so that data would be easy to find and reuse.
References
- Crosby, Kip; Elbaum, Max (April-June 1994). "Just Like the Golden Gate Bridge: Rey Johnson and Jack Harker talk about RAMAC". The Analytical Engine: Journal of the Computer History Association of California 1 (4): 4-5. ISSN: 1071-6351. Retrieved on 2007-06-22.
- Anderson, Arthur O. (2001). "Reynold B. Johnson: 1906–1998". Memorial Tributes: National Academy of Engineering 9: 141. National Academy Press. ISSN: 1075–8844, ISBN: 0–309–07411–8. Retrieved on 2007-06-22.
