microcomputers单片机microcomputern.微型计算机microcomputer control system微机控制系统microcomputer system monitor微型计算机系统监控程序microcomputer line protection微机线路保护microcomputer word processing微机字处理microcomputer interfacing kit微机接口套件microcomputer database system微型机数据库系统microcomputer development kit微机开发套件microcomputer systems support微型计算机系统支持microcomputer program library微机程序库microcomputer support devices微型计算机支持设备