Computer simulated laser:
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Signal read information, Computer interface
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Turn off the old computer, Turn on
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CD / DVD drive, disc read
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Opens, closes the CD / DVD tray
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Sound signal of a bios computer, bios
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Laser printer
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Turn off the old monitor, Turn on
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Interference, signal, Modem connection
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Alarm, Computer interface
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Turn off the hard drive, Turn on
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Signals, Computer interface
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Repeatedly pressing a computer mouse
★★★★★