4x4 Keypad - Electronic Circuits Projects Diagrams Free

sidd81 · 23rd March 2004, 05:50 PM

Can anyone tell me where i can find examples dealing with the 4x4 keypad. I am working on a project and i need to know how to input from a keypad and need to know how i can code using assembly. thank you..

**Nigel Goodwin** · 23rd March 2004, 07:53 PM

Quote:

Originally Posted by sidd81

Can anyone tell me where i can find examples dealing with the 4x4 keypad. I am working on a project and i need to know how to input from a keypad and need to know how i can code using assembly. thank you..

You don't mention what processor you are using, which rather spoils the question! - but one of my PIC tutorials deals with 4x4 keypads in PIC assembler - in case you should happen to be using a PIC.

swamytk · 26th March 2004, 06:10 AM

Dear Sidd,

Please let us have more details i.e circuit, microcontroller related. Hope I can help you on this since we have implemented 4x4 keypad in ATMEL Microprocessor.

cheers,
swamytk

hun · 30th March 2004, 05:25 AM

hello everyone, I too am looking at the 4x4 keypad using a PIC16F84A.

I have the code from Thomas McGahee, and made the changes to work with the 16F84A. I've had some trouble getting it to work properly. Maybe you guys can help me out... let me know if you need the code and/or errors round. Thanks guys!

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23rd March 2004, 05:50 PM	(permalink)
sidd81	4x4 Keypad Can anyone tell me where i can find examples dealing with the 4x4 keypad. I am working on a project and i need to know how to input from a keypad and need to know how i can code using assembly. thank you..

26th March 2004, 06:10 AM	(permalink)
swamytk	More details please, friend Dear Sidd, Please let us have more details i.e circuit, microcontroller related. Hope I can help you on this since we have implemented 4x4 keypad in ATMEL Microprocessor. cheers, swamytk __________________ The poor is not one who doesn\'t have money but who doesn\'t have dream to go ahead.

30th March 2004, 05:25 AM	(permalink)
hun	hello everyone, I too am looking at the 4x4 keypad using a PIC16F84A. I have the code from Thomas McGahee, and made the changes to work with the 16F84A. I've had some trouble getting it to work properly. Maybe you guys can help me out... let me know if you need the code and/or errors round. Thanks guys!