Portable electronic apparatus functioning as pen-table and computer system using the same

A computer system using a pen-table comprising:

• a first electronic apparatus and a second electronic apparatus,
• the first electronic apparatus including a touch-screen module for detecting contact with an external object and creating position data of a detected region, a first local area communication module transmitting and receiving data based on a local area communication protocol, a first display module for displaying the detected region and information on a user interface (UI) and functions supported by the apparatus, a first memory for storing an operating system (OS) and data for driving the UI, and a first controller for controlling the operations of the touch-screen module, the local area communication module, and the display module in response to the user's input and transmitting position data created by the touch-screen module to an electronic device that includes functions of a pen-table and local area communication,
• the second electronic apparatus including a second local area communication module for transmitting and receiving data based on the local area communication protocol and for receiving the position data created by the touch-screen module, a second memory for storing an OS and data for driving a UI, a second display module for displaying a requested OS and information, and a second controller for controlling the operations of the functioning units in response to user's input and for displaying the position data via the second display module.