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介绍带隔离功能并行口的软硬件设计方法，针对强干扰的外部条件设计硬件电路，辅以软件的自适应抗干扰措施，使得读写电路有很强的抗干扰能力，该成果已成功应用于电火花能量测试仪，亦可作ＰＣ机的标准高速通讯卡件。
This paper introduces the hardware and software design method of parallel port with isolation function. The hardware circuit is designed according to the external conditions of strong interference and the adaptive anti-jamming measures of the software are introduced to make the read / write circuit have a strong anti-jamming capability. This achievement has been successfully applied to EDM energy tester, can also be used as a standard PC high-speed communication card.