Computer interface, signals:
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Read the, Insert the disk into the drive
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Pressing a keypad, input error sound
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Closes the CD / DVD tray, Opens
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Turn on, turn off the hard drive
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Repeatedly pressing a computer mouse
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Removed, The USB flash drive is inserted
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Opening, closing the laptop cover
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Turn on, turn off the old monitor
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Double click computer mouse
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Floppy disk reading
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Franking machine
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Photocopy (photocopy)
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