Abstract: The present invention provides an improved sunshade board, the sunshade board comprises: a digital radio device that comprises at least one memory card socket, operate display panel, a sense display device that comprises at least one display screen, optical coupling member. The present invention decreases volume of radio device, and decreases taken room by putting digital music through memory card. And the memory card has small volume and large capacity, and is room-saving, easy-taking, and sense objects by optical coupling member, and can transfer sense results with board degree and high security to display screen disposed on sunshade board.

Abstract: The multi-transmission interface memory card is characterized by the dual interface capacity of its memory control chip. The multi-transmission interface memory card is simultaneously compatible to two modes of data interfacing, it enables the easy interfacing between the computers with a number of electronic (terminal) devices or the easy interfacing between the two of many these electronics devices.

Abstract: The present invention provides a structure for digital cards, which comprises a digital card main body, with the following features: contacts are attached to both sides; it furthermore possesses an electronic write-protection; wherein the contacts on both sides are used to raise the transfer efficiency, while the write-protection provides for a more secure possibility to define the card as write protected or write enabled.

Abstract: The present invention: digital card linker, especially relates to a linker structure for digital card linking with computer, which is in shape of box; one end of the linker is open end having an open for digital card inserting into. The linker has flexible piece on the upper side and lower side relative to the position of upper and lower terminals of digital card. The digital card linker can be applied to the tradition type digital cards and can be applied to future double faces and single row of digital cards, and can increase the stability of link of linker and digital card.

Abstract: The present invention provides an all-purpose motor screen. The screen is a removable liquid crystal screen. The screen cooperate outer drive module having drive circuit and battery device, and by changing drive module of various drive circuit to make the screen has various purposes, and can be driven by drive screen display image.