我所采用的控制芯片为P89V51，此芯片功能强大，能够满足设计要求。通过对电路的设计，对芯片的外围扩展，来达到对热水器水温和水位的控制和调节功能

-I used control chip P89V51, this chip powerful, able to meet the design requirements. On circuit design, chip peripheral expansion, to achieve on the water heater temperature and water level control and regulation functions