Force sensing semiconductive touchpad

摘要: A touchpad assembly and method for providing a signal to computer indicative of the location applied pressure an object touching is provided. The includes X Y position sensitive semiconductor resistance sensor layers. sensors have pair spaced apart conductive traces running across opposite ends such that RX connects RY traces. come into contact at point when asserts on touchpad. connected each trace by variable RZ associated with resistances resistances. First second timing capacitors are respective ones pairs microprocessor controls monitors charging time determine asserted