OTSU方法计算图像二值化的自适应阈值。OTSU 算法可以说是自适应计算单阈值（用来转换灰度图像为二值图像）的简单高效方法-Otsu images calculated value of the two adaptive threshold. Otsu algorithm can be said to be adaptive to calculate the single threshold (for converting images to gray scale image 2) simple

区域生长的图像分割程序，将生长起始点灰度值存入seed中，记录每次判断一点周围八点符合条件的阈值-Area growth of the image segmentation program, the growth of the starting point gray value stored in the seed, the record every time around the point of eight points meet the threshold

利用ADC0809采集电位器的电压值，将采集的电压值通过8255显示在七段数码管上，显示数据保留小数点后2位，利用8253定时数据更新，每隔0.5秒数据更新一次。扩展要求：具有设置报警阈值功能，当超过阈值时，点亮一个LED灯。(Using ADC0809 to collect the voltage value of potentiometer, the collected voltage value is displayed on seven digital tubes through 825