绝对完整的AVR单片机 Usb ISP 的下载线制做过程和资料，里面有驱动程序、原码文件电路图、等详细的说明文件-Usb ISP,Absolute integrity of the AVR Singlechip Usb ISP-wire system to do the download process and information, which has the driver, the original Code document schematics, such as detailed do

avr与PC的USB通讯源码及原理图，是一个pc与avr通过D12进行USB通讯的简单实例，功能就是控制PORTC口。-avr connecot to PC through USB(philips D12) souce code

Avr单片机usb下载线的制作资料，支持s51、s52

[ 5577.057130] usb 1-2.2: new full-speed USB device number 4 using ehci-pci [ 5577.133868] usb 1-2.2: New USB device found, idVendor=03eb, idProduct=2ff1 [ 5577.133876] usb 1-2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 5577.133