Qt 的良好封装机制使得 Qt 的模块化程度非常高，可重用性较好，对于用户开发来说是非常 方便的。 Qt 提供了一种称为 signals/slots 的安全类型来替代 callback，这使得各个元件 之间的协同工作变得十分简单。 -Qt Qt makes a good mechanism for encapsulation of very high degree of modularity, reusability, good for users to develop is very conv

IC卡 动态数据认证 目前比较流行的算法-With focus on the Windows OS based industrial control software,this paper discussed the main features in industrial control software based on modularity design from the aspects of module, DDE, OLE, OPC and the open database linkl