Without the transistor, you wouldn't for starters be able to have computers, let alone the internet. Transistors are found on microchips and without them there would be no modern electronics. Cell phones, cars, tvs, cameras, house hold appliances, anything with microchips in it has transistors, and without them they couldn't work. How important it is for electronic communication is seen in the idea that there wouldn't be cell phones or computers without them.