Laser printer:
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Repeatedly pressing a computer mouse
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Floppy disk reading
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Computer mouse movement
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Read, write, room noise, Hard disk
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Photocopy (photocopy)
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Old computer keyboard
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Opens, closes the CD / DVD tray
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General noise, Office work
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Turn on, turn off the hard drive
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Read the, Insert the disk into the drive
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Shutting, fan noise, Turning on the laptop
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Disc read, closes the CD / DVD tray, Opens
★★★★★