Double click computer mouse:
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Input error sound, Pressing a keypad
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Turning on the computer, fan noise, shutting
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Hard disk, write, room noise, read
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Turn off the hard drive, Turn on
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Old computer keyboard
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Signal, Modem connection, interference
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Turn off the old computer, Turn on
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Closing the laptop cover, Opening
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Signals, Computer interface
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The USB flash drive is inserted, removed
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Office work, typewriter, environmental sounds
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Matrix printer
★★★★★