While designing hardwareware by using notebook computer enhanced parallel port(EPP) and MAX197 AD chip and software by VC++6.0 and(WinIo library),the system is suitable for Windows XP.

• 而采用笔记本计算机增强型并口EPP结合MAX197AD芯片设计硬件；并用VC++6.；0和W inIo库进行软件设计；则适合于W indows XP系统。