无线键盘的电路设计研究  

Research on the Wireless Keyboard Circuit Designing

作　　者：雷立云[1,2,3] 

机构地区：[1]湖南大学电气工程学院 湖南长沙410082 [2]湖南文理学院物电系 [3]湖南常德415100

出　　处：《实验技术与管理》2006年第3期68-70,共3页Experimental Technology and Management

摘　　要：设计了一种27M无线键盘的发射与接收的应用电路。该设计采用EM78P451作为键盘矩阵和通信的信号编码，以2FSK调制的方式将27M调制载波信号发射出去；接收部分采用MC3361作为接收模块，解调信号经MA6135解码后能与计算机直接通信。系统程序设计涉及键盘、发送、接收几部分。The present paper has designed a kind of 27 M wirelesskeyboard launch and the receive application electric circuit. This design uses EM78P451 to take the keyboard matrix and the correspondence signal code, launches by the 2FSK modulation way the 27 M modulated carder wave signal; Receives the part then uses MC3361to take the receive module, demodulates the signal after the MA6135 decoding to be able to communicate with computer directly. The system programming involves the keyboard, the transmission, receives several parts.

关 键 词：无线系统 键盘矩阵 调制 解调 

分 类 号：TP334[自动化与计算机技术—计算机系统结构]