• 3x4 key pad
    Hi, if a 3x4 keypad is connected to port 0 of 89c51. all pins on port 0 need to connect pull up resistor or not?
  • keypad
    hi,what is the driver for an 8 bit keypad?i need ur help,urgent.tnx
  • program for interfacing keypad
    i would like to have the program for the interfacing of the keypad to the project MOVING MESSAGE DISPLAY using 89s8252. is there anybody who can help me out??
  • Keypad LCD help
    i'm having a project and it uses LCD and keypad Interface. My problem is I do not know how the data inputted in the keypad will be outputted to the LCD Display.how can it be transmitted to the other device...
  • problem with interfacing keypad
    Hey everoone! I'm using a lpc2138, And I wanna make a mini-project in this way that I have a keypad on port1(rows on P1.16 to P1.19)(columns on P1.20 to P1.23) and a lcd on port0, I want it that Once...