DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The Circuit Diagram
of the Clock Oscillator from a Canon Pocketronic II calculator
manufactured in April 1974. |
| Observed signals on the
OSC1, OSC2, OSC3 and CK Pins of the TMS0640 Clock Oscillator. DUT: TMS0641NL, B 7429 @ RV1 = 50 kOhm, TH1 = 41 kOhm.  |
| Observed signals on the
OSC1, OSC2, OSC3 and CK Pins of the TMS0640 Clock Oscillator. DUT: TMS0641NL, B 7429 @ RV1 = 100 kOhm, TH1 = 41 kOhm.  |
| Observed signals on the OSC1,
OSC2, OSC3 and CK Pins of the TMS0640 Clock Oscillator. DUT: TMS0641NL, B 7429 @ RV1 = 0 kOhm, TH1 = 41 kOhm.  |
If you have additions to the above article please email: joerg@datamath.org.
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