此程序用MAX6675读取热电偶的温度值，控制WS100T20驱动可控硅控制温度。程序包括1602液晶驱动，AD使用，PID控制，热电耦，可控硅调压等内容。-The application reads the thermocouple temperature, using MAX6675 WS100T20 drive SCR control temperature control. Program includes 1602 LCD driver, the AD is used, PID control, thermocouple, silicon controlled voltage regulator, etc