Paper rack with functions of accessing and playing multimedia files

A paper rack with functions of accessing and playing multimedia files, wherein a circuit board is installed on a fixing piece, covered with a casing, and a speaker is installed in a containing slot at a side, covered with a casing;

• a micro processor, a transmission control circuit, a control button, a liquid crystal display unit, a wireless transmission circuit, sockets, a power junction, transmission junctions, a wireless receiver and emitter, a transmission interface, a connector, an audio junction, and a battery installed on the circuit board, with the power junction and connector emplaced on the rack with functions of accessing and playing multimedia files;
• a plurality of sockets corresponding to different specifications of memory cards connected with the memory cards of corresponding specifications, and digital files and multimedia files inside the aforementioned memory cards accessed and played;
• the wireless transmission circuit connected with the wireless receiver and emitter, so as to transmit a wireless signal between a wireless network and a wireless receiving and emitting device for accessing and transmitting the digital files and multimedia files;
• some of the transmission junctions emplaced inside the casing, others located on the circuit board, which are directly connected with digital information equipment, and are used to access and transmit digital files and multimedia files inside the digital information equipment;
• the transmission interface connected with a hard disk with specifications corresponding to data stored, and used to access and transmit digital files and multimedia files inside the hard disk;
• the transmission control circuit connected with the aforementioned sockets, wireless transmission circuit, transmission junctions, and transmission interface, and used to access and transmit digital files and multimedia files between the memory cards to be connected, the wireless receiver and emitter, the digital information equipment, and the hard disk;
• the liquid crystal display unit used to display a connection status and data processing function between the aforementioned components, so as to enable a selection of corresponding data processing function with the control button, and to transmit the control signal selected to the micro processor for processing the control signal, data transmission signal, and data computation between the aforementioned components inside the circuit board;
• the touch screen having a fixing rack for connecting with the paper rack with functions of accessing and playing multimedia files, and a fixing junction for connecting with the transmission connector on the paper rack;
• the touch screen connected with the aforementioned micro processor and transmission control circuit, and used to transmit the control signal corresponding to data processing function to the aforementioned micro processor, and to play the digital files and multimedia files transmitted by the aforementioned transmission control circuit;
• digital files and multimedia files further displayed on the aforementioned liquid crystal display unit, and the speaker G used to play an audio signal of the audio digital files and multimedia files;
• the aforementioned speaker G having a connecting port used to connect with the audio junction on the circuit board;
• the power junction connected with a DC/AC transformer, for transmitting an external power to the circuit board, thereby providing a working power for the aforementioned circuit board;
• a battery located on the circuit board D, so as to enable the aforementioned circuit board to operate as usual when there is no external power;
• the battery also be charged through the aforementioned power junction.