实现功能：根据测量温度，进行PID控制加热，PWM输出。 实现单片机：stc12c5a60s2-Functions: to measure temperature, the heating of PID control, the PWM output

单片机stc控制程序，PID调节PWM输出-MCU the stc Control program, PID regulator PWM output

在stc开发板上实现PID算法控制温度。ds1820读取温度，12864显示，单片机产生PWM波通过mos开关来控制电阻加热时间。(In the stc development board to achieve PID control temperature. Ds1820 read temperature, 12864 display, single-chip PWM wave generated by the mos switch to control the resistance heat