Kalvonäppäimiä

Kalvonäppäimiä refers to a type of keyboard switch used in some electronic devices, particularly in older or more budget-oriented keyboards and control panels. These switches utilize a flexible membrane material that, when pressed, completes an electrical circuit. The membrane typically has conductive layers separated by a non-conductive spacer layer. When a key is actuated, it pushes the top conductive layer through a hole in the spacer to make contact with the bottom conductive layer, registering a keystroke.

The primary characteristic of kalvonäppäimiä is their quiet operation and resistance to spills and dust due to the sealed nature of the membrane. This makes them suitable for environments where noise is a concern or where cleaning is a frequent necessity. However, they generally offer a less tactile and audible feedback compared to mechanical keyboard switches, which can be a drawback for users who prefer a more distinct typing experience. The lifespan of kalvonäppäimiä can also be shorter than that of mechanical switches, as the membrane material can degrade over time with repeated use. Despite their limitations, their low cost and durability have ensured their continued use in various applications, including remote controls, calculators, and some computer keyboards.