计算机硬件知识大全，详细介绍了计算机各个硬件的小知识，包括鼠标，键盘，USB接口等。-Computer hardware Guinness, described in detail the various computer hardware tips and tricks, including mouse, keyboard, USB interface.

RH5020是一款基于MCU的键盘接口芯片，可自动识别USB和PS/2-RH5020 is a MCU-based keyboard interface chip that automatically recognizes the USB and PS/2