| CPC G09G 5/006 (2013.01) [G09G 2370/24 (2013.01)] | 10 Claims |

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1. A display device, comprising:
a button;
a first data transmission port, configured to be coupled to a first electronic device;
a second data transmission port, configured to be coupled to a second electronic device;
a first image transmission port, configured to be coupled to the first electronic device;
a second image transmission port, configured to be coupled to the second electronic device;
a microcontroller, configured to select the first image transmission port, the second image transmission port, or both to generate a video signal; and
a display module, configured to present an image according to the video signal,
wherein when the button is pressed, if the microcontroller selects the first image transmission port, the microcontroller switches from the first data transmission port to the second data transmission port, and receives image-transmission-port information stored in the second electronic device through the second data transmission port.
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