中文说明：心电数据分为48组，该程序是读取其中的一组数据，用MATLAB画出心电信号的波形的。程序下载完后需要改数据的存储路径。
English Description：
ECG data is divided into 48 groups, the program is to read a group of data, using MATLAB to draw ECG waveform. After downloading the program, you need to change the data storage path.