The early menu treasure system greatly improved the scientific and technological content of the catering industry, but this scientific and technological experience can not be well conveyed to customers. Holding the menu treasure often makes customers feel that the waiters are "throwing their weight around". With the widespread popularity of electronicization, people generally develop the resistance of "high point of science and technology". Generally, people often have resistance or inferiority to others holding electronic devices that 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 to order 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 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 returns the tablet to the waiter, and the tablet plays the role of de-papering. But there is still no function of transmitting data to the kitchen in real time, especially the shortcoming of cumbersome data update.

Soon, local area network (LAN) flat-panel ordering based on wifi function appeared. The dishes ordered by customers can be transmitted to the counter and kitchen 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 computer 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 improvement compared with the previous ordering system.