Computer interface, signal read information:
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Computer mouse movement
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Computer keyboard
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Opening, closing the laptop cover
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Jet printer
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Opens, closes the CD / DVD tray
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Input error sound, Pressing a keypad
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Franking machine
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Old computer keyboard
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Double click computer mouse
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Repeatedly pressing a computer mouse
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Hard disk, write, room noise, read
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Disc read, Opens, closes the CD / DVD tray
★★★★★