Kalvonäppäimiin

Kalvonäppäimiin, often translated as membrane keyboards, are a type of computer keyboard characterized by their flat, rubber or silicone dome-shaped keypads. Beneath each keycap is a flexible membrane layer. When a key is pressed, it pushes down on the membrane, completing a circuit and registering the keystroke. This design differs from mechanical keyboards, which use individual physical switches for each key.

The primary advantage of kalvonäppäimiin is their cost-effectiveness and ease of manufacturing. They are also generally quieter than mechanical keyboards, making them suitable for office environments or shared living spaces. Their sealed design can offer some resistance to dust and minor spills, though they are not typically fully waterproof.

However, kalvonäppäimiin are often criticized for their tactile feedback, which can feel mushy or less responsive compared to mechanical switches. The lifespan of the rubber domes can also be shorter than that of mechanical switches, as they can wear out over time, leading to decreased responsiveness or outright failure of certain keys. Despite these drawbacks, their affordability and quiet operation have made them a popular choice for budget-conscious users and in applications where durability against environmental factors is a concern. They are commonly found in consumer-grade computers, calculators, and some industrial control panels.