Because the reliability of UDP protocol is not well, the author design a protection-mechanism of reliability transmission which is going on from networking IC card terminal units to PC.
针对UDP协议传输的不可靠性，作者设计了从网络读卡器端和网络服务器端同时进行可靠性传输的保证机制。
This automatic and open mode of management using IC card system is convenient, safe, and applicable for PC station.
IC卡自动化管理开放式机房具有使用方便、安全可靠、适用性强等功能。
In this paper, a timing method is proposed which USES the 8253 IC of a IBM-PC as a data acquisition system. The programing skill and the practical procedures of an application are presented.
本文提出了一种利用IBM - PC微机自身的8253芯片作为数据采集系统的定时方法，给出了应用时的编程技术和具体程序。
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