本系统的设计可以用于热水器温度控制系统和饮水机等各种电器电路中。它以单片机AT89S52为核心，通过3个数码管显示温度和4个按键实现人机对话，使用单总线温度转换芯片DS18B20实时采集温度并通过数码管显示，并提供各种运行指示灯用来指示系统现在所处状态，如：温度设置、加热、停止加热等，整个系统通过四个按键来设置加热温度和控制运行模式。-This system can be used in the design of the water heater temperature control system and various electrical appliances such as rice cookers circuit. The core of it is a microcomputer AT89S52. It realize interactive between people and device by three digital display temperature and four keys. The temperature conversion 1－WIRE BUS chip DS18B20 real-time sampling and display the temperature through the digital and provide various indicator to indicate different states of the system now,eg. settings temperature,heating,stop etc. The whole system use four keys to set up the heating temperature and control mode.