The 737 FMC
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Join Date: May 2005
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The 737 FMC
Why does the datastorage on a 737 FMC only appears to be 128 KB or some thing like that? When an HDD at 250 GB costs USD 100? Okay. A HDD would maybe not been the best option when we think about stability. But a CF card on 1GB costs also 100 USD approximatly. A 737 FMC is "some" more expensive than that. I just wonder 
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Anyone?
Join Date: Jun 2004
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128 kB is actually a good lot of storage for the kind of things the FMC in a 737 would need. I would imagine that any data stored wouldn't be any more complicated than strings of ASCII text (Routes, etc), think about how much text you could fit in a simple txt file, probably hundreds of routes. 128kB would (very) roughly equate to about 128,000 characters, more than enough for what a FMC needs!
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One of the problems is the timeframe (ie lag) for developmental R&D to address the certification requirements .. meantime, by the time the gadget is in the marketplace, the IT Industry has moved umpteen generations ahead and the gadget is hopelessly outperformed by the kids' gee-whizz toys at home ... fact of life, I'm afraid ...
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Originally Posted by Charles Darwin
Thatīs right. Characters donīt use much space, and 128k is usually quite enough for a short range jet.
Until we start storing porn..............
Until we start storing porn..............
(what, you thought there was some other reason the T7's EFB runs Windows?)
