Computer mouse movement:
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Photocopy (photocopy)
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Franking machine
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Turn off the old computer, Turn on
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Modem connection, interference, signal
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Computer keyboard
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Fan noise, Turning on the laptop, shutting
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Laser printer
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CD / DVD drive, disc read
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Read, write, Hard disk, room noise
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Turn off the hard drive, Turn on
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Office work, typewriter, environmental sounds
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Floppy disk reading
★★★★★