Patent ID: 7889483

Claim:
An electronic device comprising: a bottom cover defining a first guiding slot; a display unit slidably mounted on the bottom cover, defining at least one second guiding slot, wherein the second guiding slot crosses the first guiding slot and an angle between the first guiding slot and the second guiding slot is less than 90 degrees; a main keyboard mounted in the bottom cover; and at least one secondary keyboard slidably mounted in the bottom cover, each comprising a positioning shaft passing through the first guiding slot and one of the at least one second guiding slot; wherein when the electronic device is closed, the display unit is disposed on the bottom cover, the main keyboard and the at least one secondary keyboard are positioned between the display unit and the bottom cover; and when the electronic device is opened, the display unit slide away from the bottom cover, the at least one second guiding slot drives the positioning shaft of each of the at least one secondary keyboard to slide along the first guiding slot, thus to expose the at least one secondary keyboard and the main keyboard accordingly.