Interfacing problem for Digital Code Lock with LCD and Keypad using AT89C2051 | Microcontroller › 8051 › Interfacing problem for Digital Code Lock with LCD and Keypad using AT89C2051 This topic has 0 replies, 1 voice, and was last updated 11 years ago by esd. Viewing 1 post (of 1 total) Author Posts March 20, 2012 at 2:03 pm #1559 esdParticipant Can any one help me out ? I am doing digital code lock for door using 8051 microcontroller I want to interface LCD, keypad and AT89C2051 microcontroller with P89V51RD2 robotic Dev board….Please tell me how to do it? MAIL ME :[email protected] Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In