Photocopy (photocopy):
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Signal, interference, Modem connection
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Computer noise, Communication room
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Turning on the computer, fan noise, shutting
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Disc read, closes the CD / DVD tray, Opens
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Opens, closes the CD / DVD tray
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Input error sound, Pressing a keypad
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Turn on, turn off the hard drive
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Repeatedly pressing a computer mouse
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Old computer keyboard
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Jet printer
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Turn off the old monitor, Turn on
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Computer mouse movement
★★★★★