To protect their own rights and interests effectively , software design companies are running to adopt software protections 软件设计开发公司为能有效地保护自己的权益，纷纷采取软件保护的方式达到维护权益的目的。
Mcamos technology s new online software protection lock also provides a protection lock that is needed for a network - operating environment ?扬科技之网络版软件保护锁的做法是一个网络操作环境只需一个保护锁即可。
Software protection is a needed work for protecting software engineers " benefits as well as an important component of software engineering 软件保护工作是维护软件开发人员利益的必要手段，是软件开发过程的重要组成部分。
In this paper the functions and principles of software protection card are introduced , and the circuit diagrams are also presented 文中介绍了所设计的软件保护卡的各组成部分的功能及其工作原理，并给出电路原理图的主要部分。
The basis of software protection with cpld is to design circuits according to pci local bus criterion and the goal of software protection 根据pci局部总线技术规范和所要达到的软件保护的目的设计所需的电路是实现软件保护技术的基础。
A device that attaches to a computer to control access to a particular application . dongle provides the most effective means for copy protection 一种插在计算机上的装置，控制对某一特别应用的访问。软件狗提供了最有效的软件保护的方法。
After introduction of techniques of designing circuit with cpld , some types of software protection technique involving code replanting are implemented in the card 在介绍cpld设计方法的基础上，使用了代码移植技术等几种软件保护技术来保护软件。
After analysis of protecting and cracking encryption technique of software , the paper presents a software protection technique using cpld ( complex programmable logic device ) 本文在分析软件保护技术与破解技术的基础上，研究了用cpld来实现软件保护技术。
