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Additional Pictures 

 

Complete Display and Keyboard Scanning Cycle of the MK5011 from a Unitrex 1200 (Type 37, Rev. 4C) manufactured in May 1973 displaying "-104.679"
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. MK5011 Clock Frequency at 25 kHz.

Close-up view of the transition between Digit D3 displaying "6" and Digit D4 displaying "4" of the MK5011 showing the Leading and Trailing Digit Blanking Times.


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

© Joerg Woerner, March 22, 2026. No reprints without written permission.