PULSE-TO-PULSE-SWITCHABLE MULTIPLE-ENERGY LINEAR ACCELERATORS BASED ON FAST RF POWER SWITCHING

摘要

A reconfigurable keypad for enhancing user experience of an electronic device. The keypad includes a keypad display implemented as any type of display devices that can display different configurations of characters, symbols or images. The keypad display is placed adjacent an application display module. Both the keypad display and the application display module are covered with a common protective film, giving an appearance of a continuous top surface. The keypad also has a mechanism for providing tactile feedback to the user indicating whether the keypad was properly pressed.