Abstract: A key button structure for entering data in an electronic device comprises a first key element and a second key element. The second key element is retained to the first key element by a retaining mechanism. The second key element has a joint positioned at a side thereof opposite to the first key element and two actuators 226 located at an opposite side thereof facing the first key element. The joint pivotably couples the second key element to a housing 10 of the electronic device.

Abstract: A file transfer system including: a file sender, a file receiver, an Instant Messaging (IM) server, a file relay policy server and a file relay server. Also disclosed are the internal structures of the above file relay policy server and IM server and a file transfer method. If the file receiver has not logged in the IM system, it is possible that the file sender sends a file to the file relay policy server, the file relay policy server forwards the file to an appropriate file relay server, and the file relay server transfers the file to a mobile terminal as the file receiver according to a file transfer protocol of the file relay server itself, thereby facilitating the file transfer for the mobile subscriber and enhancing the mobile subscriber's experience in using the mobile IM service.

Abstract: A handheld apparatus includes an input key, a screen, a monitoring module connected to the input key, and a Morse code decoder connected between the monitoring module and the screen. The monitoring module monitors the state of the input key and generates a corresponding Morse code, and outputs the Morse code to the Morse code decoder. The Morse code decoder decodes the Morse code into information and outputs the information to the screen. The screen displays the information. The present invention further includes a method of inputting information in the handheld apparatus.