Introduction - If you have any usage issues, please Google them yourself
MEGA8 make the USB download cable (AVR/51), can be downloaded S51/S52 ATmega series microcontroller, including the PCB diagram
Packet : 39709580mega8-make-usb-downloader(avr-51)pcb.rar filelist
MEGA8做的USB下载线(AVR-51)PCB
MEGA8做的USB下载线(AVR-51)PCB\USBISP.ddb
MEGA8做的USB下载线(AVR-51)PCB\usbisp_sch.jpg