There are two kinds, one is commonly known as "Diancaibao" and the other is PDA, which is similar to a smart phone. Usually the former. When ordering food, the waiter inputs your order in the order treasure, wirelessly transmits it to the server, and then prints it on the independent printer in the kitchen through the print server, so that different dishes can be printed to different kitchens, such as cold dishes, Shandong dishes and Cantonese dishes. , and the data will be recorded in the software at the front desk.