Opening, closing the laptop cover:
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Pressing a keypad, input error sound
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Computer keyboard
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Repeatedly pressing a computer mouse
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Computer mouse movement
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Environmental sounds, Office work, typewriter
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Photocopy (photocopy)
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Franking machine
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Turn on, turn off the old computer
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Turn on, turn off the hard drive
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Double click computer mouse
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Read, room noise, write, Hard disk
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Signal read information, Computer interface
★★★★★