The software facilities and hardware of the supermarket, including cashier software, receipt printer, scanner, if you want to be more convenient, you can get a customer monitor and credit card reader, which is enough at most. The software recommended by my friend, I use Chineydy free supermarket cashier software, which is suitable for any small ticket printer and scanning gun. Bulk goods can enter their own bar code, with membership management, stored value function, unpacking goods and so on. It is very convenient to use and has complete functions. You can try Baidu search.