【摘要】 本文提出了以规范化形式定义图元的设计方法,使得逻辑清晰,易于编程和调试。介绍了应用层次模型的设计技术。库存储采用虚拟方式和多级存储策略,恰到好处地解决了存取速度与微机内存空间紧张的矛盾。提供了丰富多彩的库操作功能,并且加以层次式的汉化菜单操作,用户环境良好,易于学习,便于用户对整个库的管理和维护。更多还原

【Abstract】 This paper proposes a design method of defining standard graphic cell. The method makes logic clear,program easy and debugging convenient. The application of leveled model to graphic base design and its implementation are described in detail.The virtual storage technique and strategy of the multi-hierarchical storage are adopted.In our base design, many functions of the base manipulation are provided and leveled Chinese menus are fiuished, and so it makes user environment friendly. It is easy to study and manage the base.更多还原