家庭财务管理，帮助家庭管理财务。对各种收入与支出。-Family financial management, financial management to help the family. Of various revenue and expenditure accounts.

计算普通褶积与循环褶积，分别使用时间域与频率域两种方法进行正、反演计算，指出循环褶积计算时所存在的边界效应现象；编写一个做相关分析的源程序-Ordinary convolution and circular convolution, respectively, using the two methods of time domain and frequency domain inversion calculation, pointing out that the phenomenon of ci