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Additional Pictures 

 

Complete Display and Keyboard Scanning Cycle of the HD3633 from a Lloyd's Accumatic 30 manufactured in February 1975 displaying "12345678."
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. HD3633 Clock Frequency at 80 kHz.

Complete Display and Keyboard Scanning Cycle of the HD3633 from a Lloyd's Accumatic 30 manufactured in February 1975 pressing the [=] key (KS5#K1)
while displaying "9." and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. HD3633 Clock Frequency at 80 kHz.


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

© Joerg Woerner, November 12, 2024. No reprints without written permission.