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Schematic For Keyboard Control By Using PIC16F84A

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lilin

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May i know how was the schematic design for keyboard control by using PIC16F84A?Actaully my project is more on dot matrix display and i want add one more function (keyboard control). Hopefully the person who know it can help me to solve it. Thank you.
 
lilin said:
May i know how was the schematic design for keyboard control by using PIC16F84A?Actaully my project is more on dot matrix display and i want add one more function (keyboard control). Hopefully the person who know it can help me to solve it. Thank you.

Have a look at my tutorials, they use the 16F628 (rather than the obselete 16F84), but the code is almost identical.
 
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