【摘 要】
：
故障现象：面板上所有的按键均失控。分析检修：根据故障现象，可以判断故障是出自控制板上。但进一步从电路图中分析，不难看出故障与CPU控制部分和其相关组成部分有关（静态存贮器RAM
论文部分内容阅读
故障现象：面板上所有的按键均失控。分析检修：根据故障现象，可以判断故障是出自控制板上。但进一步从电路图中分析，不难看出故障与CPU控制部分和其相关组成部分有关（静态存贮器RAMll6‘程序存贮器ROW764‘八同相三态收发器74LS245）。其中CPU是直接控制和处理相关组成部分
Symptom: All the keys on the panel are out of control. Analysis and maintenance: According to the fault phenomenon, it can be judged that the fault is from the control board. But further analysis from the circuit diagram, it is easy to see that the fault is related to the CPU control part and its related components (static memory RAM116 ’program memory ROW764’ eight in-phase tri-state transceiver 74LS245). The CPU is a direct control and processing related components
其他文献
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
本文论述了大型医院建设院区网应达到的目标、遵循的原则、完成的任务、实现的方法。阐述了当前建设院区网应立足快速以大网交换技术的观点，并以该技术为基础给出本院院区网的
我们医院地处广东著名侨乡中山市。每年都有许多华侨热心捐赠钱物支持家乡建设。我们医院近年也有接受馈赠的医疗仪器。这对于医院提高诊断水平,更好地开展新的科研项目起到
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
想当年,垦荒高岵。壮怀私比盘古。铁锄执拗欺生手,犹念纵横双斧。跨险阻,吟断句:耕云在我如歌舞。高蹈远骛。任遐想浮游,豪言四溢,一啸众山怒。卅年后,失业锄头长锈,重开五