| 摘要 |
PURPOSE: An electric file is provided to store a file in a USB(Universal Serial Bus) and to move the file in case a user puts the USB in the electric file. CONSTITUTION: A small square plastic(1) is included. A power supply device(2) supplies power to each device. A button(3) is for passing over a page. A USB recognizing unit(4) recognizes whether to install a USB. A display device(5) displays the page on a screen(6).
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