To reduce the cost and improve the reliability,this paper analyzes the existing capacitive touch control circuit,designs both hardware and software for low cost capacitive touch control.

• 电容式触摸按键技术由于电路相对简单,只需一个微处理器和一些外围电路就可实现对按键的触摸检测和控制,因而适用于许多家用电器。