用C8051F单片机的PCA模块的上升沿捕捉功能实现方波信号的频率检测-PCA Module C8051F MCU with the rising edge of the square wave signal capture function to achieve the frequency of detection

采用pca的方法，对样本进行分类。在实际中pca算法一般用于检测样本的相似度-Using pca method to classify the samples. In practice pca algorithm is generally used to detect the similarity of samples