Turning on the computer, fan noise, shutting down:
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Bios, Sound signal of a bios computer
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Double click computer mouse
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Turn off the hard drive, Turn on
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CD / DVD drive, disc read
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Turn on, turn off the old monitor
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Jet printer
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Photocopy (photocopy)
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Office work, general noise
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Floppy disk reading
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Opens, closes the CD / DVD tray, disc read
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Computer simulated laser
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Closing the laptop cover, Opening
★★★★★