Ruutunäppäimistö

Ruutunäppäimistö, also known as an on-screen keyboard or virtual keyboard, is a computer interface that allows users to input characters by clicking or tapping on a graphical representation of a keyboard displayed on their screen. Unlike a physical keyboard, a ruutunäppäimistö is entirely software-based.

These keyboards are commonly found in operating systems and are accessible through accessibility features. They are particularly useful for individuals who have difficulty using a physical keyboard due to motor impairments, or for situations where a physical keyboard is unavailable or impractical, such as on tablet devices or in public computer terminals.

The layout of a ruutunäppäimistö can often be customized, and they may include additional features like predictive text, character selection for different languages, or specialized keys for shortcuts. Users interact with them by using a pointing device, such as a mouse or stylus, or through touch input on a touchscreen. Some advanced systems may also support eye-tracking or head-tracking for input. The primary advantage is flexibility and accessibility, allowing for a wide range of users to interact with digital devices.