hi...friends please help me about the circuit diagram of at89c51 microcontroller programmer. i want to program 89c51 by usb cable by laptop.but dont send me firmware type circuit,that i have already seen on internet.so please send ckt diagram of it &also send if it possible pcb layout of it..so plz as soon as possible send this on my below mail address with ur email address, so further queris i can ask to u.i will wait for ur valuable response on -- hardik.patel20062006@gmail.com