华北电力大学计算机控制理论课，的第二次大作业的编程，主要是显示PID自动校正。-North China Electric Power University computer control theory, the second largest job programming, mainly display PID auto-correction.

华北电力大学计算机控制理论课，的第3次大作业的编程，主要是显示PID自动校正-North China Electric Power University computer control theory, the 3rd largest job programming, mainly display PID auto-correction

华北电力大学计算机控制理论课，的第4次大作业的编程，主要是显示PID自动校正-North China Electric Power University computer control theory, the 4th largest jobs program, mainly display PID auto-correction