用c8051做的usb鼠標（HID類）Firmware works with the Silicon Labs IDE v1.71 or later and the Keil C51 tool chain. Project and code modifications will be necessary for use with different tool chains.
用AVR單片機設計的MP3播放器
功能：
MP3 Player
IDE ATA interface
FAT 32 with long file name support
USB interface
On board power supply (input from 7v to 20v DC)
Bootloader firmware upgradeable via USB port
Infrared bi-directional interface
Remote Control
Back light graphic LCD
worked with only 2x AA batteries
In sleep mode sink less than 1uA (2.5mA in active mode)
5 buttons for easy navigation
Long range (more than 20 feets)
