Introduction - If you have any usage issues, please Google them yourself
PS/2 interface of the underlying drivers// Author: warm-heartedness// Email: xg_2004_sy@126.com// Blog: gdrc.bolg.21ic.com// Version: 1.0// completion date :2008-10-14// hardware platform, 51 single-chip analog IO port PS/2 protocol and PS/2 device communications