Archived posting to the Leica Users Group, 2003/02/22
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Mike Sure you can create a circuit out of discrete components that can emulate or even duplicate the functions of an integrated circuit, but to duplicate what some camera circuits do would require a case the size of a steamer trunk! Do any of you realize how many discrete components are needed to replicate an LSI circuit "chip"? Jerry Mike Durling wrote: > It will be THEORETICALLY possible to create a circuit in the future that > will emulate one that used obsolete components. Whether it will be > practical to reverse-engineer something like an M7's shutter circuit is > another thing altogether. > > People do this now with the original Nintendo game system. They stuff a > small general-purpose computer into the old case and run emulation > software. Why they do this is another question, since the part that > wears out on a Nintendo, its cartridge connector, is available as a > replacement item. > > All this being said, I agree that it is, and will be for the forseeable > future, easier to cut a gear. > > Mike D > > Frank Filippone wrote: > > Sal.. the issue is NOT the circuit boards... it is in the IC's ( chips) that > > are mounted on them. When they are no longer made by the IC companies, > > there are no more. ( assumes stock is also used up.) > > > > Austin may correct this, but the IC processes have moved forward so quickly > > that in 5 years, most if not all the older process chips would be un > > manufacturability. Yes, inventories exist of these chips, but again, when > > they run out, that is it. Your M7 shutter might as well be a door stop. > > > > It is not a matter of desire to support customers, it is the ability to get > > the parts that is the problem. > > > > Long live the M1,M2,M3,M4,M5,M6! All-Mechanical shutters rule! > > > > Frank Filippone > > red735i@earthlink.net > > > > > > -- > > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html