软件包括主程序、显示子程序、键盘子程序，频率设置子程序等。
1·I believe that everyone has their own preferences, I respect anyone's preferences, the reason for writing this book, only from a professional point of view give us a steelyard.
我相信，每个人都有自己的喜好，我尊重任何人的喜好，之所以写这本书，也只是从专业的角度给大家一杆秤。
2·I had to use the traditional tool — a steelyard to weigh and count by myself and then collect money.
我不得不使用传统的工具：一杆秤用来称水果的重量和计算价格。