Billentyre

Billentyre is the Hungarian locative form of the noun billentyű, meaning onto the key or to the key. The base term billentyű covers keys on both keyboards and musical instruments and is used in contexts where a key is referenced as a physical object.

In computing and consumer electronics, billentyű refers to the keys on a keyboard or keypad pressed to input data or issue commands. Modern keyboards include alphanumeric keys, punctuation, function keys, navigation keys, and modifier keys, arranged to optimize typing speed and user control. Laptops and compact devices may merge keys or assign secondary functions to additional key combinations.

In music, the term describes the keys of a keyboard instrument such as a piano or organ. The standard keyboard layout presents seven white keys per octave with five black keys in a repeating pattern of twelve semitones. Pressing a key causes a sound either mechanically (piano action) or electronically (digital keyboards).

Usage and terminology: Billentyűre appears in phrases involving direction or location toward a specific key, while the base form billentyű refers to the object itself. The concept of keys spans both musical and typographic technologies and remains essential in human–machine interaction and musical performance.