FORMS, FUNCTIONS, FEATURES …

A touch panel turns a flat-panel display into a dynamic graphical user interface (GUI) and data entry device: with its touch screen representing a replacement for the keyboard and mouse — or, in some applications — a stack of remote controllers. All LCD touch panels operate on the same basic principles, which is to say that they register a contact closure of a certain value and transmit that information — through serial cable, Ethernet, infrared (IR), or RF — to another unit that then takes the appropriate action(s).