A semiconductor is a material that has electrical conductivity between that of a conductor and an insulator. Commonly made from elements like silicon or germanium, semiconductors can control the flow of electricity. This property makes them essential in electronic devices, allowing for the creation of components like transistors and diodes. Semiconductors are the foundation of modern technology, found in devices such as smartphones, computers, and solar panels. They enable the processing and storage of information, making them crucial for advancements in electronics and telecommunications. Their unique properties allow for the development of integrated circuits, which power most electronic systems today.