Manual copy machine:
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Computer noise, Communication room
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Computer mouse click
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Sound signal of a bios computer, bios
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Laser printer
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Closes the CD / DVD tray, Opens
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Computer interface, signal read information
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Floppy disk reading
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Computer keyboard
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Fan noise, shutting, Turning on the laptop
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Turn off the hard drive, Turn on
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Read, Hard disk, write, room noise
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Repeatedly pressing a computer mouse
★★★★★