Our contemporary world is based on semiconductors. In addition to your computer,cellphones and digital cameras, semiconductors are a critical component of a growing number of devices. Think of the tall-efficiency LED lights you are putting in your house, or along with everything with a lit display or control circuit: cars,refrigerators, ovens, and coffee makers and more. You would be hard-pressed to find a contemporary device that uses electricity that does not occupy semiconductor circuits in it.
Source: phys.org