• problem in keypad of 8051
    i m using micro-controller p89v51rd2 in that i m trying program of keypad which out put show on 7 segment but in that when i m hold the key than out put will be show but after relished the key out put...
  • keypad
    hi,what is the driver for an 8 bit keypad?i need ur help,urgent.tnx
  • 8051 Peripheral Simulation
    Hello, I use Keil uvision evaluation tool to work with both ARM and 8051 processors. My problem is that while working with 8051, I am not able to simulate the on chipe peripherals. In fact, while...
  • Keypad Help
    Hey guys, I am currently trying to interface a 4x4 matrix keypad to 89c52. i have conntected the keypad to 89C52 column and row. Pin 12 is for column1, pin 13 for col 2, pin 14 for col 3, pin 15 for col...
  • Keypad problem
    I use ATMEL 89c51 microcontroller with keypad 4x4. My problems is that my 1st row contain 1 2 3 A it display 1 2 3 A for every row i checked the code on proteus8 its working fine and also on 8051...