|electron Tube Data sheets|
This is what's left of my Friden 1112. I took it apart a very long time ago to use the case for a micro processor system. I should not have done that;-)|
For half the boards I drew the schematics. Maybe someday I will finish it...
|For some more info about this machine, see: The Old Calculator Museum or Calcuseum|
|board 4||same as 3|