C8051F340的USB HID方式的BOOTLOADER，包含使用说明，固件代码（Keil uv3工程），上位机可执行文件.-C8051F340 USB HID mode BOOTLOADER, contains instructions for use, the firmware code (Keil uv3 engineering), host computer executable file.

C8051F340平台的BootLoad程序，可通过USB接口对应用升级。-C8051F340 platform BootLoad program, the application can be upgraded via the USB interface.