Double click computer mouse:
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Closing the laptop cover, Opening
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Jet printer
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Fan noise, shutting, Turning on the laptop
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Turn on, turn off the old monitor
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Matrix printer
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Computer keyboard
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Sound signal of a bios computer, bios
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Signal, interference, Modem connection
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Turn on, turn off the hard drive
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Manual copy machine
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Room noise, read, write, Hard disk
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General noise, Office work
★★★★★