Rate-of-change switches and controllable apparatus

A method which comprises:

• body-member tilting a first tilt-sensitive transducer;
• producing a first output signal proportional to said tilting step;
• differentiating said first output signal with respect to time and determining a rate-of-change;
• and
• performing a first switching function in response to said differentiated first output signal based on said rate-of-change;
• wherein performing a switching function that includes momentary contact switching, and said method further comprises:
• initiating a sequential plurality of time delays in which one is a window of opportunity;
• refraining from said momentary-contact switching step during a first time delay that follows said initiating step;
• performing said momentary-contact switching step within said window of opportunity that follows said first time delay;
• refraining from said momentary-contact switching step during a second time delay that follows said window of opportunity;
• and
• initiating operation of a first electrical device subsequent to successful completion of the preceding steps.

A method which comprises:

• a. producing an output signal;
• b. determining a first rate-of-change of said output signal;
• c. selectively performing a switching function in response to said output signal and based at least in part on said first rate-of-change exceeding a predetermined rate-of-change threshold;
• d. determining a second rate-of-change of said output signal;
• and
• e. preventing variations in said output signal from performing said switching function based at least in part on said second rate-of-change not exceeding said predetermined rate-of-change threshold.