An actuator suitable for multi-directional actuation of a push button switch is disclosed. This actuator has an actuation button attached to a plunger to define a predetermined angle therebetween. The actuation button has a surface for multi-directional activation. The actuator also has a pair of hinge pins that is attached to the actuation button for pivotably mounting the actuator about a pivoting axis. Activation on any point on the surface of the actuation button results in a unidirectional moment about the pivoting axis to tilt the plunger to releasably actuate the push button switch. Also disclosed is a personal digital assistant that uses the actuator for actuating a notification switch from between two orthogonal directions.

 
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> Method and apparatus for simultaneous line-interface wiring collision detection

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