Manual copy machine:
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Franking machine
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Floppy disk reading
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Turning on the laptop, shutting, fan noise
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Laser printer
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Jet printer
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Bios, Sound signal of a bios computer
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Pressing a keypad, input error sound
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Turn off the old monitor, Turn on
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Old computer keyboard
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Turn on, turn off the old computer
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Alarm, Computer interface
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General noise, Office work
★★★★★