This paper introduces an automatic multi-switch equipment controlled by the MCS-51 microcomputer on the crossbar exchange trunk line.
本文介绍了一种用MCS-51单片机控制的交换机多路外线自动接续装置。
This paper introduces an automatic multi-switch equipment controlled by the MCS-51 microcomputer on the crossbar exchange trunk line.
本文介绍了一种用MCS-51单片机控制的交换机多路外线自动接续装置。
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