用于心电的一种低通数字滤波算法，该方法设计简单、运算量小，对有用信号的影响小。同时设计了相关的界面，用于实时显示心电信号的波形，且可以在不同背景下将心电信号显示出来。-Used for the ECG a low pass digital filtering algorithm, the method is designed to be simple, small amount of computation, the impact of the useful signal. While the design of the interface for real-time display of ECG waveform and ECG displayed in different contexts.