简单的台球社收费系统，delphi开发，单机不含灯光控制-Simple charging system Billiards Club

书吧管理系统，可以针对书吧的图书进行分类别进行管理，对图书可以添加修改删除等操作，也可以对图书进行查询统计。-Shuba management system that can be managed by category for the book club books, for books you can add, modify or delete operation, can also query statistics books.