Introduction - If you have any usage issues, please Google them yourself
I do s51/52 micro-controller board the schematic and PCB (protel99se format), wrenches auto ISP interface, can be downloaded through the parallel port procedures can be done directly with boards, proved so absolute, has sold several pieces, please rest assured Download
Packet : 67506244at89s51shiyanban.rar filelist
51.PCBDOC
51.SCHDOC