HP at mid-day updated its Compaq displays with one of its first mainstream multi-touch displays. The 21.5-inch L2105tm has a built-in optical sensor that recognizes two-point touch input in operating systems that support it but can still accept input from an included stylus for artwork or other more precise apps. To help, the display is specifically designed for touch and has a fixed-height panel that won't shift around in mid-use.
