Abstract: An extended keyboard includes keys and conductive contact points. Each key is connected to a corresponding one or more conductive contact points. The conductive contact points protrude from a backside of the extended keyboard. The conductive contact points are used to contact with a multi-point touch screen of an electronic device when the extended keyboard is placed on the multi-point touch screen of the electronic device, such that when an operation is applied to one key, the corresponding one or more conductive contact points electrically connected to the key conduct the operation to positions of the multi-point touch screen contacted with the corresponding conductive contact points.

Abstract: An extended keyboard includes keys and conductive contact points. Each key is connected to a corresponding one or more conductive contact points. The conductive contact points protrude from a backside of the extended keyboard. The conductive contact points are used to contact with a multi-point touch screen of an electronic device when the extended keyboard is placed on the multi-point touch screen of the electronic device, such that when an operation is applied to one key, the corresponding one or more conductive contact points electrically connected to the key conduct the operation to positions of the multi-point touch screen contacted with the corresponding conductive contact points.

Abstract: An electronic device includes a monitor (90) including a screen (91), and an image-sensing device (80) disposed on the screen. The image-sensing device includes a first plate (10), a second plate (20) opposite to the first plate, and at least one image-sensing element (30) disposed between the first plate and the second plate. The image-sensing element includes a lens (32), a holder (34) for holding the lens, an image sensor (38) for sensing light from the lens and generating an image signal. The image sensor is disposed opposite to the lens.