Mechanical switches are devices that use physical components to create a connection when pressed. They are commonly found in keyboards, where each key has its own switch. These switches provide tactile feedback, allowing users to feel a click or bump when a key is activated, which can enhance typing accuracy and speed. There are various types of mechanical switches, including Cherry MX, Kailh, and Gateron, each offering different characteristics such as actuation force and sound. Mechanical switches are favored by gamers and typists for their durability and responsiveness, often lasting millions of keystrokes compared to traditional rubber dome switches.