Office work, typewriter, environmental sounds:
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Shutting, fan noise, Turning on the computer
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Computer simulated laser
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Repeatedly pressing a computer mouse
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Closing the laptop cover, Opening
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Hard disk, write, room noise, read
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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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Interference, Modem connection, signal
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Computer noise, Communication room
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Fan noise, shutting, Turning on the laptop
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Matrix printer
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Computer interface, signal read information
★★★★★