driver the sensor is a clear panel which when touched registers a voltage change that is sent to the controller the controller processes this signal and passes the touch event data to the pc through a bus interface be it a bus card serial usb infrared or wireless the software driver takes this data and translates the touch events into mouse events resistive lcd touch screen monitors such as the ones intended by the inventors rely on a touch overlay which is composed of a flexible top layer and a rigid bottom layer separated by insulating dots attached to a touch screen controller the inside surface of each of the two layers is coated with a transparent metal oxide coating ito that facilitates a gradient across each layer when voltage is applied pressing the flexible top sheet creates electrical contact between the resistive layers producing a switch closing in the circuit the control electronics alternate voltage between the layers and pass the resulting x and y touch coordinates to the touch screen controller the touch screen controller data is then passed on to the computer operating system for processing resistive touch screen technology possesses many advantages over other alternative touch screen technologies acoustic wave capacitive near field imaging infrared highly durable resistive touch screens are less susceptible to contaminants that.