The present invention provides tablets with interconnection features and a system of multiple tablet assemblies removably interconnected to one another. The tablets may be removably mounted to a vertical surface or positioned on a horizontal surface. Features of the present invention allow a user to remove or move one tablet from the system without disrupting or moving the other tablets.

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

The present invention provides tablets with interconnection features and a system of multiple tablet assemblies removably interconnected to one another. The tablets may be removably mounted to a vertical surface or positioned on a horizontal surface. Features of the present invention allow a user to remove or move one tablet from the system without disrupting or moving the other tablets.

A rewritable tablet book includes a front cover, a back cover, and a spine connecting the back cover to the front cover. The rewritable tablet book includes a rewritable surface that extends across an inside surface of the front cover, the spine, and the back cover. The rewritable tablet book also includes a fastener. The fastener joins the front cover to the back cover in a closed position to hold a marker in a hollow region defined by the rewritable surface and the spine. The marker is locked in the hollow region.

A rewritable tablet book includes a front cover, a back cover, and a spine connecting the back cover to the front cover. The rewritable tablet book includes a rewritable surface that extends across an inside surface of the front cover, the spine, and the back cover. The rewritable tablet book also includes a fastener. The fastener joins the front cover to the back cover in a closed position to hold a marker in a hollow region defined by the rewritable surface and the spine. The marker is locked in the hollow region.

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