Computer keyboard:
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Old computer keyboard
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Turn off the old monitor, Turn on
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Signal, interference, Modem connection
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Typewriter, environmental sounds, Office work
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Alarm, Computer interface
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The USB flash drive is inserted, removed
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Fan noise, Turning on the computer, shutting
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Jet printer
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Computer mouse click
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Floppy disk reading
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Read the, Insert the disk into the drive
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Bios, Sound signal of a bios computer
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