Abstract: The present invention is to provide a wireless electronic device comprising a main body and an earphone assembly being retractably disposed in the main body with two ends provided at one side of the main body capable of being pulled outward and a cable portion between the two ends adapted to extend through the other side of the main body to form an enclosed loop. By utilizing this wireless electronic device, a user may put the loop of the earphone assembly on a hook of wall or on the neck for hanging the electronic device, and may also pull speakers respectively disposed at the ends of the earphone assembly out of the main body and put the speakers into the ears for listening.

Abstract: A device and method is provided for providing a notebook computer casing whose contour and outward features can be change by the user. The device includes a main body, at least one decorative piece that can be fixed on and detached from the main body at random. The main body includes a slot, set on its rims, and a first locking part, set inside the slot, at least one decorative piece that includes a first interlocking part can be locked into position with the first locking part. The decorative pieces are to be fixed on the main body to change the contour and outward features of the computer and, meanwhile, serve as buffers protecting the computer against impact damage.

Abstract: The present invention is to provide a wireless electronic device comprising a main body and an earphone assembly being retractably disposed in the main body with two ends provided at one side of the main body capable of being pulled outward and a cable portion between the two ends adapted to extend through the other side of the main body to form an enclosed loop. By utilizing this wireless electronic device, a user may put the loop of the earphone assembly on a hook of wall or on the neck for hanging the electronic device, and may also pull speakers respectively disposed at the ends of the earphone assembly out of the main body and put the speakers into the ears for listening.

Abstract: A device and method is provided for providing a notebook computer casing whose contour and outward features can be change by the user. The device includes a main body, at least one decorative piece that can be fixed on and detached from the main body at random. The main body includes a slot, set on its rims, and a first locking part, set inside the slot, at least one decorative piece that includes a first interlocking part can be locked into position with the first locking part. The decorative pieces are to be fixed on the main body to change the contour and outward features of the computer and, meanwhile, serve as buffers protecting the computer against impact damage.

Abstract: A portable computer system with a rotatable plate for playing multimedia data directly includes a rotatable plate pivotally arranged at one side of the portable computer and a multimedia-processing device arranged on the rotatable plate and on the mainframe corresponding to the rotatable plate. Users can manipulate the multimedia-processing device by opening the rotatable plate, and close the rotatable plate to protect the multimedia-processing device.