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Additional Pictures 

 

Complete Display and Keyboard Scanning Cycle of the GI 250 from a Litton Royal Digital III manufactured in March 1972 displaying "-104."
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. GI 250 Clock Frequency at 100 kHz.
Complete Display and Keyboard Scanning Cycle of the GI 250 from a Litton Royal Digital III manufactured in March 1972 displaying "6.7.9.0."
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. GI 250 Clock Frequency at 100 kHz.
Close-up view of the transition between Digit D2 displaying "9." and Digit D3 displaying "7." of the GI 250 showing the Leading and Trailing Digit Blanking Times.


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

© Joerg Woerner, July 9, 2025. No reprints without written permission.