Computer interface, signals:
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Closing the laptop cover, Opening
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Photocopy (photocopy)
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Repeatedly pressing a computer mouse
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Interference, Modem connection, signal
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Bios, Sound signal of a bios computer
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Computer mouse click
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Turn off the old monitor, Turn on
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Turn on, turn off the hard drive
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Opens, disc read, closes the CD / DVD tray
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Franking machine
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Laser printer
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The USB flash drive is inserted, removed
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