Miscellaneous › Others › Circuit diagram for 4*4 keypad interfaced with P89V51RD2 › go for thz links it might
October 21, 2010 at 5:07 am
#5110
Participant
go for thz links it might help you, the pin config. for at89c51 and p89v51rd2 is same
http://www.engineersgarage.com/microcontroller/8051projects/keypad-simple-electronic-lock-AT89C51
http://www.engineersgarage.com/microcontroller/8051projects/interface-keypad-AT89C51