上位机与下位机的USB通讯，下位机采用新华龙的F340。实现了上位机与下位机的握手，可批量传送数据。-Host computer with the USB drive the next digital communications, the next crew of the new hualong F340. Achieved with the lower PC handshake machine can transmit data v

USB通信的上位机软件，采用USBXPRE-USB PC communications software, using USBXPRESS