产生若干个周期的正弦波数据，以当前系统日期和自己的姓名为文件名分别存储为文本文件、二进制文件和电子表格文件，然后分别读取并显示其波形(Generates several cycles of sine wave data, which are stored as text files, binary files, and spreadsheet files respectively with the current system date and their name as file names,