A normal keyboard, also known as a membrane keyboard, is a type of computer keyboard that uses a rubber or silicone membrane to register key presses. The membrane sits under the keys and has small electrical contacts that register when a key is pressed. These types of keyboards are generally less expensive to produce and are commonly found in standard desktop computers and laptops. They are also known for being quieter than mechanical keyboards.
A mechanical keyboard is a type of computer keyboard that uses individual mechanical switches for each key press, rather than a rubber or silicone membrane. These switches are typically made of plastic and metal and provide a tactile and audible feedback when a key is pressed. This can provide a more satisfying and precise typing experience. Additionally, mechanical keyboards often have a longer lifespan, as the mechanical switches are typically more durable than rubber membrane switches. They also often have customizable backlighting, key switches, and keycaps which give users a more personalized typing experience. They are also known to be louder than membrane keyboards.