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=Electronics Hardware Questions=

     
   

 
  Q:
We have a circular wheel with half painted black and the other half painted white. There are 2 censors mounted 45 degree apart at the surface of this wheel( not touching the wheel) which give a "1" for black and "0" for white passing under them. Design a circuit to detect which way the wheel is moving. Can not assume any fixed position for start.
 
 

A: