An electronic circuit including a microchip for use as an intelligent user
interface also comprises touch sensor technology that differentiates
between proximity and physical contact events to activate and control
various loads including light bulbs, products with radio frequency
circuitry or electric motors. An input to the microchip is connected to a
switch or sensing structure that does not form a serial link between the
power source and the load. The electronic circuit controls various
functions in response to user actions including automatic delayed
shut-off functions, find-in-the-dark indicator and a power source
level/product state indications. The microchip allows the user to select
specific functions based on the time duration of activation signals, the
time duration between activation signals and the number of activation
signals at the input. The microchip is further configured to interpret
and react to the signals received from a user in a way that enhances ease
of use of the product and to use the indicators to provide information to
the user that is influenced by the signals received as well as the state
of the product.