Complex sentence: The functionality of a magic eye can be achieved with modern semiconductor circuitry and optoelectronic displays; and the 100-volt-plus voltages required by magic eyes are not present in modern devices, so the magic eye is now obsolete.
Split into simpler sentences: The functionality of a magic eye can be achieved with modern semiconductor circuitry and optoelectronic displays. The 100-volt-plus voltages required by magic eyes are not present in modern devices, so the magic eye is now obsolete.