| 摘要 |
The present disclosure relates to an electronic device (100) for erasing contents on a writing board. The electronic device (100) comprises a motion detecting unit (103) for detecting movement of the electronic device (100) from resting position which then transmits an activation signal to activate a processing unit (107) and a proximity sensor (105). The proximity sensor (105) identifies proximity of the electronic device (100) with the writing board. The processing unit (107) receives a signal from the proximity sensor (105) when the electronic device (100) is proximal to the writing board. Further, the processing unit (107) receives selection of colours through user interface (109) on the electronic device (100) for identifying erasable or retainable contents on the writing board. The processing unit (107) transmits a control signal to motion control system (113) to control a moveable cleaning surface (110) of the electronic device (100) to perform either pulling or pushing the moveable cleaning surface (110) backward or forward respectively based on the selection of colours. |
