Hard disk, read, write, room noise:
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Computer keyboard
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Jet printer
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Computer mouse click
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Write, read, room noise, Hard disk
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Turn off the old computer, Turn on
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Franking machine
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Photocopy (photocopy)
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Signals, Computer interface
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Computer mouse movement
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Typewriter, Office work, environmental sounds
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CD / DVD drive, disc read
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Closes the CD / DVD tray, Opens
★★★★★