How to create a tax,total tax, change total,payment total in the bill?

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Using Cash Drawers

On this tutorial I’ll show you how to operate cash drawers. ###Connection types Serial Connection: Drawer connects to PC through serial port. This connection type is not recommended because drawers does not have power source of their own and to be able to kick drawer they use power from serial port. If port voltage is not enough for cash drawer it won’t work. If you have that kind of drawers on hand you can search Google for USB powered kickers. RJ11 Connection: Drawer connects to a recei…