A keyboard is an input device for typing text, interacting with software, and executing commands on electronic devices. It typically features a grid of keys representing letters, numbers, symbols, or functions. Most keyboards use the QWERTY layout, named after the first six letters on the top row of alphabetical keys. They often connect via USB or wirelessly using Bluetooth. Some models feature backlighting or customizable RGB lighting for improved aesthetics and functionality in low-light conditions.