How did the hotel robot know the room number when delivering food?

The hotel robot knows the room number because the hotel staff will input the guest's floor and room number in the robot program. The robot will enter the elevator by itself and reach the designated floor. When the designated room arrives at the door, it will ring the doorbell by itself. Robot is an intelligent machine that can work semi-automatically or fully automatically. Robots can perform tasks such as work or movement through programming and automatic control. The earliest robots in history can be found in the puppet robots that Emperor Yang Di ordered craftsmen to build in the image of Liu Ai. It has organs and the ability to sit, get up, worship and squat.