Computer interface, signal read information:
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Fan noise, shutting, Turning on the computer
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Turning on the laptop, shutting, fan noise
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Repeatedly pressing a computer mouse
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Read the, Insert the disk into the drive
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Floppy disk reading
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The USB flash drive is inserted, removed
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Pressing a keypad, input error sound
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Closes the CD / DVD tray, disc read, Opens
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Franking machine
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Photocopy (photocopy)
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Computer keyboard
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Computer interface, signals
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