The wireless ordering system is a change from the traditional "restaurant ordering, placing an order, holding a pen and a piece of paper to settle the bill, and a' bartender' running back and forth": the waiter comes to the guest's desk or room with a palm-sized PDA, clicks or writes on the PDA, and can quickly display the relevant recipes needed by the guests through code input, classification selection, keyword search and user-defined input. After the customer chooses, PDA will generate a menu. 1. A computer: used for wireless ordering service and placed in the computer room. 2. Wireless router: If you choose one or more computers, you should choose an enterprise-level wireless router with strong signal penetration. If you choose more than one, you can choose the home version of the wireless router, which has weak penetration and may deploy at least one on each floor. Note: the wireless router should also be connected to the hotel computer network through the network cable, and should be placed above the corridor where the signal is unobstructed. When deploying a wireless router, you need strong power to follow up.