Modem connection, signal, interference:
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Computer simulated laser
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Turn off the old monitor, Turn on
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Pressing a keypad, input error sound
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Old computer keyboard
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Turn on, turn off the hard drive
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Signals, Computer interface
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Floppy disk reading
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Signal read information, Computer interface
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Jet printer
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Opens, disc read, closes the CD / DVD tray
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Repeatedly pressing a computer mouse
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Photocopy (photocopy)
★★★★★