usb接口设计，此USB手写系统采用汉王公司的传感器获得笔画信息传给68HC05JB4经过整理后通过USB总线发送到PC再由自行编写的驱动程序接收最终转给汉王公司的文字识别软件识别-usb interface design, this USB pen system uses sensors to obtain Hanwang 68HC05JB4 stroke information to be collated and sent to the post-PC through the USB bu