DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| Complete Display Scanning
Cycle of the TMS0975NL BP from a Little Professor manufactured in
December 1976
flashing the display and captured with
the Digilent Digital Discovery connected to the DCM-50A Platform. TMS0975NL actually pauses between Display Scanning Cycles. (Note: The CK Frequency is set to 150 kHz and not properly displayed due to a sampling rate of just 15 kHz)  |
| Complete Display
Scanning Cycle of the TMS0975NL BP from a Little Professor manufactured in
December 1976 displaying "EEE" and captured with
the Digilent Digital Discovery connected to the DCM-50A Platform. TMS0975NL actually outputs "666" but doesn't scan Segment C.  |
| Multiple Display
Scanning Cycles of the TMS0975NL BP from a Little Professor manufactured
in December 1976 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 BP from a Little Professor manufactured in
December 1976 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 BP from a Little Professor manufactured in December
1976
displaying "IDLE" and captured with the Digilent Digital Discovery connected to the DCM-50A Platform. TMS0975NL actually outputs "-".  |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, November 11, 2023. No reprints without written permission.