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mouse interface with com1

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E

e.mfr

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in optomechanical mice we have 3 kind of inputs:
1-switch inputs
2-x direction optical sensors
3-y direction optical sensors

4 optical sensor are connected to 4 pin of mouse IC.
I opend an old mouse & see 2 output of this sensors
are connected to each other with 2 different resistor
(3.3K & 1M) & finally connect to 7pin of com1.

can I take it as a reason that this 2 output make
a weighted or?
did com1 design with MVL technology?

thanks all for help
 

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