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Additional Pictures 

 

Keyboard Scanning Pulse to D5 Display Output transition of the C-550 from an Interton PC 2008 (Version 2) manufactured in July 1973 while displaying "-104.6790"
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. C-550 Clock Frequency at 100 kHz.

D8 Display Output to Keyboard Scanning Pulse transition of the C-550 from an Interton PC 2008 (Version 2) manufactured in July 1973 while displaying "-104.6790"
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. C-550 Clock Frequency at 100 kHz.

Keyboard Scanning Pulse to D1 Display Output transition of the C-550 from an Interton PC 2008 (Version 2) manufactured in July 1973 while displaying "-104.6790"
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. C-550 Clock Frequency at 100 kHz.

D4 Display Output to Keyboard Scanning Pulse transition of the C-550 from an Interton PC 2008 (Version 2) manufactured in July 1973 while displaying "-104.6790"
and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. C-550 Clock Frequency at 100 kHz.


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© Joerg Woerner, November 15, 2025. No reprints without written permission.