基于51单片机的C语言代码，指数加权平均算法滤波函数，也是一个一阶低通滤波器。文件中有比较详细的注释。-Based on the the 51 microcontroller C language code, exponentially weighted average algorithm filtering function is also a first-order low-pass filter. Detailed notes in the file.

程控滤波器的程序，可以实现高通滤波和低通滤波，中心频率可调。-Programmable filter program, you can achieve high-pass filter and low-pass filter, the center frequency is adjustable.

心电算法，实现低通滤波高通滤波及基线滤波(ECG algorithm, low pass filtering, high pass filtering and baseline filtering.)