在微机联机监控仪器场合,控制仪器的同时,还必须在微机键盘上操作。当仪器与微机相距稍远,且又需两者同步启动时,一个人就难以方便地、准确地控制。本文介绍电容耦合式无触点按键开关键盘增设远控按键的简便方法。 1.工作原理增设远控按键的控制线路见附图,电容耦合式无 In the computer online monitoring equipment occasions, control equipment, but also must be in the computer keyboard operation. When the instrument is slightly far away from the microcomputer and needs to be started simultaneously, it is difficult for a person to conveniently and accurately control it. This article describes the capacitive coupling of non-contact key switch keyboard to add a remote button easy way. 1. Working principle Additional remote control button control circuit shown in the drawings, capacitive coupling without