Control circuit using pic 16F84

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The discussion focuses on how to ask questions in the forum regarding programming a keypad with the PIC 16F84 microcontroller. Users are encouraged to seek tutorial help rather than direct answers to homework or coursework problems. A request for a specific program to control a keypad is met with a suggestion to first understand keypad scanning and the role of diodes in the circuit. Resources, including a Wikipedia link on keypads, are provided to aid in learning. Overall, the emphasis is on self-education and understanding the underlying concepts before seeking direct assistance.
lusy
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how can u ask questions in this forum?
 
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can u please give a program that will control a keypad
 
lusy said:
how can u ask questions in this forum?

You just did.

CS
 
lusy said:
can u please give a program that will control a keypad

Can you be more specific as to what you want?

CS
 
lusy said:
can u please give a program that will control a keypad

We don't give out answers to homework/coursework problems here on the PF, lusy. We are willing to give you tutorial help, so that you can figure out the answers to your assignments yourself, however.

So here's a basic link to keypad info on wikipedia.org, with other links:

http://en.wikipedia.org/wiki/Keypad

And you should also do some reading about how keyboards are scanned, and why there are diodes in the row/column arrangement of the key switch circuits. After you do that reading, it should be pretty apparent how to use a microcontroller (uC) to do the scanning.
 

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