If you have a job, where you’re needed to keep track of paper receipts, then it would be a disaster, if you discovered that a few of the paper receipts were missing here and there! You might be in deep trouble, especially when you’re being accused or blamed for missing the important paper receipts of company.
In order to get yourself out from this mistake, you might want to develop digital paperless receipt system. By using this digital paperless receipt system, all your receipts can now be stored automatically in one central location.
Well, the main purpose of this project is when a customer tries to make a purchase with a credit or ATM card; the transaction information will be automatically packaged and sent to a webserver. If the customer wants to view their transactions online, they have to log into a web interface to check on their previous transactions!
The cashier uses the keypad to enter an amount to be charged. Then, it displays the amount on the LCD display. The keypad is matrix encoded, thus it can only occupies 7 pins of the MCU.
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