设计了PLC与PC机串行通讯口之间信号适配器硬件电路，包括输入接口电路、输出接口电路。
This research works out a design of signal adaptor circuit of serial communication port between PLC and PC, including input interface circuit and output interface circuit.
本文从构造汉字自动输入系统出发，着重阐述了IF—800微型机与C_(1000)光导摄象机的接口电路。
This paper start from structuring automatic input system of Chiuese characters, describes interface of vidicon camera C1000 to IF-800 microcomputer.
介绍了可编程视频输入编码芯片SAA7111和可编程视频解码输出芯片SAA7185工作原理和接口电路设计。
Introduces operation principle and interface circuit design of Video Input Processor SAA7111 and Video Output Processor SAA7185.
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