Modern Uses
Tesla was an inventor way ahead of his time. In fact, many of his inventions were so advanced that they still have uses today in modern devices. Some of these inventions include transistors, used today in computers; alternating current, used to supply electricity to most buildings; and x-ray, light bulb, radio, hydro-electric power and radio astronomy. All of these, Tesla helped lay the foundations for scientists to later improve on. Also in the Information Age, Tesla's invention of transistors, played a very key part in the creation of computers.
Picture thanks to: http://commons.wikimedia.org/wiki/File:Transistors.agr.jpg