Hard disk, read, write, room noise:
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Typewriter, Office work, environmental sounds
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Computer noise, Communication room
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Repeatedly pressing a computer mouse
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Turn off the old monitor, Turn on
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The USB flash drive is inserted, removed
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Double click computer mouse
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Hard disk, write, read, room noise
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Computer simulated laser
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Turning on the computer, fan noise, shutting
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Manual copy machine
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Franking machine
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Input error sound, Pressing a keypad
★★★★★