An application of security monitor system for parking lots by using the technology of multimedia monitor was given. Its system component and module of software and hardware were developed.
通过多媒体监控技术，给出了它在停车场安全监控系统的一个应用，并构建了它的系统组成和软硬件模块。
The software and hardware technology of DES is also very mature, but there are some weaknesses of DES in security and etc.
目前网络通信中通常采用的是分组数据加密算法——DES，它拥有简捷、快速和标准化的特点，软硬件技术的实现也已经非常成熟。
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