【摘要】 介绍了一种以PC机为主机单片机为从机的远程监控系统数据传输技术，并且将它成功地应用于电梯运行状态的远程监控。更多还原

【Abstract】 In this paper, the data communication technique of remote FDD system by telephone and MODEM is introduced, the master is IBM-PC, the slaves are single-chip microcomputer, and its using is successful.更多还原