Need some help (keypads)

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unseen marine

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Hey all,

On my current circuit (its a electronic poker chip device) currently the inputs are PTM which send out pulses, however, I would instead like to give the option for the user to input the amount they want with a key pad - this is the one I have: **broken link removed** (the 3 x 4 one). However, I have no idea on how to code the E28 chip to work with it - how would you go about coding it??

Thanks a lot

Josh

P.S. Im using circuit wizard.
 
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