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Summagraphics数字化仪与IBM-PC主机是通过串行接口RS-232-C来实现数据交换的。本文给出了实现数据交换的一种串行接口线路的连接方式、开关设置和BASIC驱动程序。
The Summagraphics digitizer and IBM-PC host communicate through the serial interface RS-232-C. This paper presents a serial interface circuit to achieve data exchange connection, switch settings and BASIC driver.