htrs
Newbie level 6

Please help
Hello Everyone
I am trying to interface a 4 by 4 matrix keyboard to a 8051 microcontroller. I am trying to interface it with using INTERRUPT. So i sincerely request you to give the schematic of 4 by 4 matrix keyboard. I would be connecting only 4 lines to the keyboard. one of them wold be to the interrupt.
Hello Everyone
I am trying to interface a 4 by 4 matrix keyboard to a 8051 microcontroller. I am trying to interface it with using INTERRUPT. So i sincerely request you to give the schematic of 4 by 4 matrix keyboard. I would be connecting only 4 lines to the keyboard. one of them wold be to the interrupt.