Tablet computer set and method for sharing items

A tablet computer set, comprising:

• a main tablet device having a main display screen;
• and
• a sub display device having a sub display screen, communicating with the main tablet device;
• wherein
• the main tablet device comprises:
• an input unit configured to allow a user to select an item displayed on the main display screen and generate a sharing signal in response to the user's selection;
• a communication unit;
• a processor configured to control the communication unit to transfer the sharing signal to the sub display device and the selected item to the sub display device;
• and
• the sub display screen comprises:
• a communication module configured to communicate with the communication unit to receive the sharing signal and the selected item transmitted from the main tablet device;
• a sub processor configured to control the sub display device to display the received selected item on the sub display screen according to the sharing signal received by the communication module.