Hard disk, read, write, room noise:
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Room noise, read, write, Hard disk
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Communication room, computer noise
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Double click computer mouse
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Sound signal of a bios computer, bios
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Photocopy (photocopy)
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Jet printer
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Turn off the hard drive, Turn on
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Insert the disk into the drive, read the
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Computer keyboard
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Floppy disk reading
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Fan noise, Turning on the laptop, shutting
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Matrix printer
★★★★★