| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a large multi-touch electronic whiteboard, particularly a large multi-touch electronic whiteboard using two systems.SOLUTION: A large multi-touch electronic whiteboard comprises a switch for switching from an external system to an internal system as necessary. The present invention provides a dual system of large multi-touch electronic whiteboard when the format of desired files is not supported by the system itself, and an external computer connected to the large multi-touch electronic whiteboard can be used to play back the desired files.</p> |
