Thin film memory is a high-speed variation of core memory developed by UNIVAC in a government-funded research project. Instead of threading individual ferrite cores on wires, a thin film (4 millionths of an inch thick) of iron-nickel alloy (called permalloy) was deposited as small dots (using a mask) on small glass plates by vacuum evaporation techniques. The drive and sense lines were then added using printed circuit wiring over the alloy dots. This provided very fast access times in the range of 670 nanoseconds, but was very expensive to produce. The UNIVAC 1107, intended for the civilian marketplace, used thin film memory only for its 128-word general register stack. Military computers, where money was less of a concern, used larger amounts of thin film memory. Thin-film was also used in a number of high-speed computer projects, including the high-end of the IBM System/360 line, but general advances in core tended to keep pace. ==External link== * [http://ed-thelen.org/comp-hist/navy-thin-film-memory-desc.html Thin Film] Computer memory Non-volatile memory
The name should definitely be "Thin film memory", which gets over 600 hits on Google, as opposed to include magnetic, which reduces it to 100.
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Thin film memory
Thin film memory is a high-speed variation of core memory developed by UNIVAC in a government-funded research project. Instead of threading individual ferrite cores on wires, a thin film (4 millionths of an inch thick) of iron-nickel alloy (called permalloy) was deposited as small dots (using a mask) on small glass plates by vacuum evaporation techniques. The drive and sense lines were then added using printed circuit wiring over the alloy dots. This provided very fast access times in the range of 670 nanoseconds, but was very expensive to produce. The UNIVAC 1107, intended for the civilian marketplace, used thin film memory only for its 128-word general register stack. Military computers, where money was less of a concern, used larger amounts of thin film memory. Thin-film was also used in a number of high-speed computer projects, including the high-end of the IBM System/360 line, but general advances in core tended to keep pace. ==External link== * [http://ed-thelen.org/comp-hist/navy-thin-film-memory-desc.html Thin Film] Computer memory Non-volatile memory
Thin film memory
The name should definitely be "Thin film memory", which gets over 600 hits on Google, as opposed to include magnetic, which reduces it to 100.
See other meanings of words starting from letter:
T
TA | TB | TC | TD | TE | TF | TG | TH | TI | TJ | TK | TL | TŁ | TM | TN | TO | TP | TR | TS | TU | TW | TX | TY | TZ |Words begining with Thin_film_memory:
Thin-film_memory
Thin_film_memory
Thin_film_memory
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