Using the Touchscreen (Optional)NOTE: Make sure the “Serial Port COM3 (Touchscreen)” item is set properly in theSCU program. (See “Advanced Menu” in chapter 5 for information.)CAUTION: Do not use a sharp object such as a ballpoint pen or pencil on thetouchscreen. Doing so may damage the touchscreen surface. Use the includedtouchscreen pen (option) located on the handle.The touchscreen is a touch-sensitive device that allows you tocommunicate with the computer by controlling the location of the pointeron the screen and making selection with the buttons.The touchscreen needs a special device driver support that allows you toeasily use the computer without a mouse or touchpad. (For informationon installing the driver, see Chapter 6.)2-12 Operating Your Computer