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Additional Pictures 

 

Complete Display Scanning Cycle of the µPD277 from an MBO de Luxe III manufactured in May 1975 displaying "-104.679"
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. µPD277 Clock Frequency at 40 kHz.
Close-up view of the transition between Digit D3 displaying "6" and Digit D4 displaying "4" of the µPD277 showing the Leading and Trailing Segment Blanking Times.


If you have additions to the above article please email: joerg@datamath.org.

© Joerg Woerner, March 8, 2025. No reprints without written permission.