Abstract: A portable electronic device, such as a portable computer, a personal digital assistant and a mobile telephone handset, includes a main board module having opposite first and second sides, and a keyboard module mounted on and coupled electrically to the main board module. The first side of the main board module is formed with an opening and a keyboard receiving cavity that extends from the opening toward the second side. The keyboard module is received in the keyboard receiving cavity and is capable of being pulled to extend out of the keyboard receiving cavity via the opening. As such, other control devices, such as a touch control panel and a pen input panel, can be provided on a third side of the main board module that interconnects the first and second sides.

Abstract: A battery module for a portable computer includes a tubular battery casing and a pair of battery contacts. The battery casing is adapted to receive a set of battery cells therein. The battery casing is adapted to be mounted on one side of the portable computer and is configured so as to form a finger hole with the portable computer, thereby permitting gripping of the battery casing for carrying the portable computer. The battery contacts are mounted on the battery casing and are adapted to establish electrical connection between the portable computer and the set of battery cells in the battery casing.

Abstract: A battery module for a portable computer includes a tubular battery casing and a pair of battery contacts. The battery casing is adapted to receive a set of battery cells therein. The battery casing is adapted to be mounted on one side of the portable computer and is configured so as to form a finger hole with the portable computer, thereby permitting gripping of the battery casing for carrying the portable computer. The battery contacts are mounted on the battery casing and are adapted to establish electrical connection between the portable computer and the set of battery cells in the battery casing.

Abstract: A portable electronic device, such as a portable computer, a personal digital assistant and a mobile telephone handset, includes a main board module having opposite first and second sides, and a keyboard module mounted on and coupled electrically to the main board module. The first side of the main board module is formed with an opening and a keyboard receiving cavity that extends from the opening toward the second side. The keyboard module is received in the keyboard receiving cavity and is capable of being pulled to extend out of the keyboard receiving cavity via the opening. As such, other control devices, such as a touch control panel and a pen input panel, can be provided on a third side of the main board module that interconnects the first and second sides.