Turning on the computer, fan noise, shutting down:
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Laser printer
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Input error sound, Pressing a keypad
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Turn on, turn off the old computer
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Computer keyboard
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Insert the disk into the drive, read the
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Environmental sounds, typewriter, Office work
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Photocopy (photocopy)
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Office work, general noise
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Double click computer mouse
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Signal read information, Computer interface
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Jet printer
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Opening, closing the laptop cover
★★★★★