Downloader of Mikrocontroller AT89S51/52

i think this posting useful for anyone who need it. this is a scheme of downloader of mikrocontroller of AT89S51/52, i thing anyone need it bacause i need it too. i take this reference from http://bram-iy.web.ugm.ac.id/?p=18 and this is link of image http://www.bram-iy.web.ugm.ac.id/file/downloader.jpg. this resource is useful on interfaceing between microcontroller and pc. network of both is send a cource code programming from pc to microcontroller.


picture Mikrocontroller of AT89S51/52 downloader, i think by ugm great studen.