Computer keyboard:
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Bios, Sound signal of a bios computer
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Repeatedly pressing a computer mouse
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Opens, closes the CD / DVD tray
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Closing the laptop cover, Opening
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Disc read, CD / DVD drive
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Computer noise, Communication room
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Signal read information, Computer interface
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Computer simulated laser
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Shutting, fan noise, Turning on the laptop
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Computer keyboard
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Double click computer mouse
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The USB flash drive is inserted, removed
★★★★★