The invention discloses a touch menu callout method of an all-in-one
machine. The touch menu callout method comprises the following steps: a specific zone is arranged on a display screen of the all-in-one
machine in advance and is used as a menu callout
trigger zone, and a
serial port is used for monitoring a touch action in the zone; after the touch action is monitored, a menu callout command is sent to the main board of the all-in-one
machine by a
USB (Universal Serial
Bus); after receiving the command, the main board starts a menu application program; and a menu is displayed on the display screen, and a user performs touch operation according to prompts. The all-in-one machine provided by the invention is additionally provided with a centre control module on the basis of a traditional all-in-one machine, so as to realize the menu callout method; and one end of the centre control module is connected to the
serial port of a touch frame, and the other end of the centre control module is connected to the
USB port of the main board, so that touch action received from the touch frame is converted into the menu callout command to be sent to the main board, and the main board starts the menu application program accordingly. By using the menu callout method of the all-in-one machine, the user can call out the menu through touch and can operate the menu; and compared with a traditional method, the operation is more convenient and quick.