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Copyright © 2005-2024 华北计算机系统工程研究所版权所有
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该电路有光电输入电路(VD,3DU12),脉冲形成电路(IC1A,IC1B组成电压比较器；光电耦合器；晶体管开关电路)和记数与显示电路等组成.
