Abstract
Physical widgets, or phidgets, comprise devices and software that
are almost direct analogs of graphical user interface widgets. Like widgets,
phidgets abstract and package input and output devices: they hide
implementation and construction details while exposing functionality through a
well-defined API. They also have an (optional) on-screen interface. Phidgets
also require: a connection manager to track how devices appear on-line; a way
to link a software phidget with its physical counterpart; and a simulation mode
to allow the programmer to develop, debug and test a system using phidgets
even when no physical device is present.
Notes
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