PROGRAMMABLE KEY UTILIZING A LIQUID-CRYSTAL DISPLAY AND METHODS FOR OPERATING THE KEY

摘要

A programmable key for displaying messages to an operator so as to draw the operator's attention actively to the key is presented. The key comprises a liquid-crystal display for showing at least one message on the key according to the program chosen, components for creating messages on the liquid-crystal display, and a device for enabling the liquid-crystal display to be translated from one position to another position. In typical operation, the liquid-crystal display is initially activated to show a message at the key's neutral position. When the key is depressed the liquid-crystal display automatically reactivates to show a second message. At either position, the key may show a blank screen by appropriate energization or deenergization of the liquid-crystal display.