According to an embodiment, a laptop personal computer comprises a display housing with a display unit, a main body housing which houses a radio communication module, a connecting unit which rotatably connects between the display housing and the main body housing, a first radio communication antenna as a main antenna which is formed at an end part of the display housing almost orthogonal to the connecting unit, a second radio communication antenna as a sub antenna which is formed at an end part of the display housing in almost parallel with the connecting unit, the second radio communication antenna making a pair with the first radio communication antenna, a first cable which connects the first radio communication antenna to the radio communication module through the connecting unit, and a second cable which connects the second radio communication antenna to the radio communication module through the connecting unit.