Opens, closes the CD / DVD tray, disc read:
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Repeatedly pressing a computer mouse
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Floppy disk reading
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Matrix printer
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Bios, Sound signal of a bios computer
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Turn off the hard drive, Turn on
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Double click computer mouse
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Computer keyboard
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The USB flash drive is inserted, removed
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Jet printer
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Typewriter, Office work, environmental sounds
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Opening, closing the laptop cover
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Fan noise, Turning on the computer, shutting
★★★★★