Abstract: By the research of wireless USB and the protocol of PS-2 keyboard，this article proposes a kind of realizing wireless keyboard method by establishing a wireless transmitter on the PS-2 keyboard and USB receiver in the PC.The article has carried on the detailed elaboration from wireless keyboard hardware design，wireless communication protocol and firmware design.This article has achieved the re-equipping to the IBM KB-2961 PS-2 keyboard，and implemented the function of wireless keyboard.This wireless transmitter and USB receiver utilize the original resources fully，save the resources，and simultaneously realize the wireless function of PS-2 keyboard.If the existing wired keyboard is rebuilt，the many profits are gotten.

Key words: wireless USB, keyboard, PS-2 interface, wireless keyboard

摘要： 通过PS-2键盘接口通讯协议和Wireless USB技术的研究，提出了一种在PS-2接口的有线键盘上设置一个无线发射器，在PC主机端设置一个USB接口接收器，将原来的有线键盘改装成无线键盘的方法。文中对无线发射器和USB接口接收器的硬件设计、无线通讯协议及软件设计等内容进行了详细地阐述。对IBM KB-2961的PS-2键盘进行了改装，实现所有按键的无线功能。该键盘的发射器和接收器，既充分利用了原来的有线键盘，节省了资源，同时又实现了键盘的无线功能。若对用户已有的有线键盘进行改装，在市场上具有很高推广价值。

关键词: 无线USB, 有线键盘, PS-2接口, 无线键盘