The early menu treasure system greatly improved the scientific and technological content of the catering industry, but this scientific and technological experience could not be well conveyed to customers. Holding the menu baby often makes customers feel that the waiter is "showing off". With the widespread popularization of electronic technology, people generally have the resistance of "high point of science and technology". Ordinary people tend to have resistance or inferiority to others holding electronic devices they don't understand in front of them, which is obviously not conducive to improving customers' dining experience.

After the appearance of tablet computer, it naturally evolved into ordering food with tablet computer, which not only greatly improved the dining experience of customers, but also made customers feel the high-end atmosphere of restaurants and restaurants in the early days of tablet computer. This kind of tablet ordering is often to install a ordering APP on the tablet. After ordering, the customer returned the tablet to the waiter, and the tablet played the role of removing paper. However, there is still no function of transmitting data to the kitchen in real time, especially the shortcoming of cumbersome data update.

Soon, LAN tablet subscription based on wifi function appeared. Customers' orders can be transmitted to counters and kitchens in real time, and managers can see the business statistics of the day in real time. Inventory and dishes can be dynamically modified and mastered, and the order data of tablet computers can be seamlessly integrated into the original electronic accounting system. The multimedia display function of tablet computer allows customers to see the color and cooking process of dishes more intuitively. This is a great progress compared with the previous ordering system.