Computer interface, signals:
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Fan noise, shutting, Turning on the laptop
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Insert the disk into the drive, read the
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Matrix printer
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Turn on, turn off the hard drive
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Input error sound, Pressing a keypad
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Floppy disk reading
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Opens, closes the CD / DVD tray, disc read
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Computer keyboard
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Signal read information, Computer interface
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Jet printer
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Sound signal of a bios computer, bios
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Photocopy (photocopy)
★★★★★