Key switches are the mechanisms found beneath the keys of a keyboard that register a key press. They come in various types, including mechanical, membrane, and scissor switches, each offering different tactile feedback and actuation force. Mechanical switches are popular among gamers and typists for their durability and responsiveness. The choice of key switch can significantly affect the typing experience. For instance, mechanical switches provide a distinct click sound and feel, while membrane switches are quieter and softer. Understanding these differences helps users select a keyboard that best suits their preferences and needs.