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本文在分析8255功能和可能出现的故障基础上,对8255采用功能测试,该方法比较简便,故障检测率高,能满足一般用户的要求。
Based on the analysis of 8255 functions and possible faults, this paper uses 8255 functional tests. This method is simple, fault detection rate is high, to meet the requirements of general users.