一个自己做的书店售书系统，有数据库，实现数目管理、会员管理、销售情况统计，打印销售小票。-A bookstore to sell books to do their own system, a database, to achieve the number of management, membership management, sales statistics, print sales receipt.

Delphi游泳馆收费管理系统, 收费，会员，多种会员级别，顾客显示屏,开钱箱,控制小票打印机-natatorium system