Photocopy (photocopy):
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Computer interface, alarm
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Manual copy machine
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Input error sound, Pressing a keypad
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Closing the laptop cover, Opening
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Bios, Sound signal of a bios computer
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Turn on, turn off the hard drive
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Read, Hard disk, room noise, write
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Old computer keyboard
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Typewriter, environmental sounds, Office work
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Matrix printer
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Photocopy (photocopy)
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Turning on the computer, fan noise, shutting
★★★★★