Keypad Arduino

http://playground.arduino.cc/code/Keypad

Is it possible to also have character inputs when you push 2 - 9 buttons? just like in the cellphone keypad? If yes, can anyone teach me how? thanks

Is it possible to also have character inputs when you push 2 - 9 buttons?

Do you mean when you press buttons 2 through 9, or do you mean when you press 2 buttons or 3 buttons or 4 buttons at a time?

You do get informed which button was pressed, when a button is pressed. If you want to interpret a particular button as '2', 'b', or "The elephant ate my homework", you can.

When you press button 2 once, the output will be "a", when you press it twice the output will be "b" something like that

When you press button 2 once, the output will be “a”, when you press it twice the output will be “b” something like that

No. Every time you press the button, the output will be the same. Is it up to you count presses of the same switch and interpret the result differently.

The answers you get this time you ask are going to be no different from the ones you got last time.

YOU must do some work.