Archived posting to the Leica Users Group, 2009/03/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>From 2000 to 2002 I worked on a project with NASA to upgrade the computers >and networks that were used in the International Space Station. One of >NASA's axioms, based on their experience thus far, was that anything that >went up to be used by astronauts needed to be fitted with flash memory >because NASA believed that flash stood the best chance of long-term >survival in harsh space conditions. It is now 7 years later and possibly they believe something else now (the group has dispersed) but I continue to believe that flash memory is extremely rugged and reliable. You can wear it out by using it too much, but that's another story. Wasn't it EPROMs that were erased with a giant flash, despite what Toshiba's press office says? Flash is electrically erasable; EPROMs use optical (UV) erasure. > > This has probably come up before so I apologize for needing a reiteration, > but how long can an SD card hold its data without deteriorating?