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Additional Pictures
Complete Display Scanning
Cycle of the TMS0975NL CSP from a Little Professor manufactured in May
1978
flashing the display and captured with
the Digilent Digital Discovery connected to the DCM-50A Platform. TMS0975NL actually pauses between the Display Scanning Cycles. (Note: The CK Frequency is set to 150 kHz and not properly displayed due to a sampling rate of just 30 kHz) |
Complete Display
Scanning Cycle of the TMS0975NL CSP from a Little Professor
manufactured in May 1978 displaying "EEE" and captured with
the Digilent Digital Discovery connected to the DCM50A Platform. TMS0975NL actually outputs "666" but doesn't scan Segment C. |
Multiple Display
Scanning Cycles of the TMS0975NL CSP from a Little Professor manufactured
in May 1978 during the transition into
displaying "EEE" and captured with
the Digilent Digital Discovery connected to the DCM-50A Platform. TMS0975NL switches into a faster Display Scanning Cycle. |
Complete Display
Scanning Cycle of the TMS0975NL CSP from a Little Professor
manufactured in May 1978 when pushing a number key
for a wrong answer and captured with
the Digilent Digital Discovery connected to the DCM-50A Platform. TMS0975NL "freezes" the last Display Scanning Cycle. |
Complete Display Scanning
Cycle of the TMS0975NL CSP from a Little Professor manufactured in May
1978
displaying "IDLE" and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. TMS0975NL actually outputs "-". |
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© Joerg Woerner, November 12, 2023. No reprints without written permission.