• 3X4 Keypad
    i connect row1->p0.0 row2->p0.1 row3->p0.2 row4->p0.3 colum1 ---->p0.4 column2---->p0.5 column3----->p0.5 i pull up all columns with 4.7k to vcc this keypad is telephone keypad please help me...
  • 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...
  • 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...
  • 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 notes
    i want notes for programming 4*3 keypad using 8051 so can any one give some information about this .