This paper introduces the design principle, the system structure , the application function of digital video monitoring system in the university safe guard management.

本文介绍了应用于高校安全防范管理的数字视频监控系统的设计原理、体系结构和应用功能。

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At the same time, to prevent the generation of latch-up, guard rings are added around the large dimension digital output inverter PMOS and NMOS transistors of the circuits.

同时，为了防止闩锁效应的产生，在电路的大尺寸数字输出反相器的PMOS管和NMOS管的周围增加了保护环。

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Entrance guard system, as well called access controller system, is the digital management apparatus to control the access of the personnel.

门禁，又称出入管理控制系统，是一种管理人员进出的数字化管理系统。

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Intel and Microsoft grew big and ruled the planet, while the old guard of Digital Equipment, Data General and Wang were taken over, trivialized or snuffed.

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As late as 1987 the old guard--IBM and the minicomputer stalwarts such as Wang and Digital--was still laughing at chip PCs.

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