Turning on the laptop, fan noise, shutting down:
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Manual copy machine
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Signals, Computer interface
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Laser printer
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Insert the disk into the drive, read the
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Interference, Modem connection, signal
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Turn off the hard drive, Turn on
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Pressing a keypad, input error sound
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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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Turn on, turn off the old computer
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Computer simulated laser
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Turn off the old monitor, Turn on
★★★★★