Abstract: The present invention offers a fixing structure for input keys, applied in personal digital assistant provided with function of a mobile telephone. On the backside of the case of a framework are provided a plurality of positioning elements and a plurality of thermomeltable elements respectively. On said positioning elements and thermomeltable elements are sheathed consecutively with elastic sheet, plate, circuit board and fixing plate. Each end of said thermomeltable elements is accommodated in corresponding recessed hole provided in said fixing plate to avoid interference with other parts. Pressing keys set up on elastic sheet can be just protruded from the case respectively, and by means of a bottom plate kept flat against the whole bottom, the fixing structure is completed. In this way, not only is the aim to decrease thickness of PDA achieved, but also it is convenient for users to carry.

Abstract: Present invention discloses a built-up microcomputer, comprising an input interface, output interface integrated with computer main as well as connecting part. One end of the connecting part is linked to the input interface, and the other end is hinged on a combination part. The combination part is joined to the independent output interface integrated with computer main, so that the output interface integrated with computer main is joined to the input interface. In this way, if keyboard is used as input interface, then together with output interface integrated with computer main a set of microcomputer is formed. If necessary, the output interface integrated with computer main can be separated from the combination part, so that after being completely separated from the input, the output interface can be utilized independently. Present invention can be not only folded but also disassembled, and is flexible and convenient both for operation and carrying.

Abstract: The present invention provides a cover connecting mechanism which is used for connecting the cover to the main body of an electronic product, including: at least one FPC used for communication data amission; a connector made of elastically deformable material which partially wraps the FPC while exposing its two ends. The two exposed FPC ends are connected to the cover and the printed circuit board in the main body to enable the transmission of communication data.

Abstract: This invention relates to a method for enlarging/reducing digital images, which carries out the image scale conversion processing uniformly and smoothly according to the regional mapping method to create the mutual positional relation within the reference frame between the pixels of an original image and the pixels of a new image. By using this method, each of the new image pixels and the corresponding region of the original image pixels can be determined, moreover, the average method or the interpolation method can be used within this region to achieve the effect of scaling the digital images on a computer display or the device having a LCD display uniformly and smoothly without having the mosaic effect while enlargement and deformity while reduction. The image scale conversion processing can also be achieved at a high speed.

Abstract: A method for automatically switching windows of different sizes particularly shown in a small display screen of a compact portable personal computer by means of determining a current position of a cursor and a key typed by a user is disclosed. By utilizing this, a larger window switching to a smaller window or vice versa is carried out automatically by the computer, thereby enabling a convenient operation.