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???
03/14/05 19:24
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#89663 - we actually made such a beast
Responding to: ???'s previous message
I don't think that my mass spectrometer would be practical without a ยต-controller. It would be possible, but it would require a prohibitively large number of analog circuits and their quantity would always be a fundamental limitation (for any finite number).
Longer ago that I care to remember, I worked for a company that made massspec electronincs using analog (NOT op-amps, they were not good enough) and 74TTL (no computer, uC, mC or whatever). A few years later some of the logic was replaced by a PDP-8.

Erik

List of 14 messages in thread
TopicAuthorDate
[OT] Understanding Op-Amp specs..            01/01/70 00:00      
   Not as off topic as one might think            01/01/70 00:00      
      not so fast....            01/01/70 00:00      
      History            01/01/70 00:00      
         In the interests of accuracy I think the            01/01/70 00:00      
            Memories            01/01/70 00:00      
         Op Amps            01/01/70 00:00      
            valves and tubes            01/01/70 00:00      
      uC-less Mass Spec            01/01/70 00:00      
         digital and analog.            01/01/70 00:00      
            Field conditions            01/01/70 00:00      
               the field            01/01/70 00:00      
               Field Servicability            01/01/70 00:00      
      we actually made such a beast            01/01/70 00:00      

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