Turn on, turn off the hard drive:
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General noise, Office work
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Bios, Sound signal of a bios computer
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Floppy disk reading
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Turn on, turn off the hard drive
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Laser printer
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Double click computer mouse
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Insert the disk into the drive, read the
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Matrix printer
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CD / DVD drive, disc read
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Photocopy (photocopy)
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Environmental sounds, Office work, typewriter
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Hard disk, read, room noise, write
★★★★★