This is very useful project for hotels. In hotels normally the cashier will write the items and calculate the rate and gives the bill .Instead of calculating the rate manually and writing the bill, we can design a system that will produce a real bill.
Her we can enter the items and their quantity through the key pad. Then microcontroller will calculate the total price and it will printout the bill using thermal printer. Also total price will display in LCD. This will reduce manual work. It is efficient and faster