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The 18th-century innovation of the pianoforte, with hammers striking metal strings via key pressure, enabled dynamic sound variation. Electric keyboards began with applying electric sound technology. The first was the Denis d'or stringed instrument, [5] made by Václav Prokop Diviš in 1748, [6] with 700 electrified strings.
QMK (Quantum Mechanical Keyboard [2]) is open-source firmware for microcontrollers that control computer keyboards. [3] [4] [5] The QMK Configurator is freely available software which facilitates designing keyboard layouts and then turning them into firmware files. The QMK Toolkit is freely available software which facilitates the flashing or ...
The Texas Instruments SN76489 is a programmable sound generator chip from the 1980s, used to create music and sound effects on computers and video game systems. Initially developed by Texas Instruments for its TI-99/4A home computer, it was later updated and widely adopted in systems like the BBC Micro , ColecoVision , IBM PCjr , Sega's Master ...
A common user interface is the musical keyboard, which functions similarly to the keyboard on an acoustic piano where the keys are each linked mechanically to swinging string hammers - whereas with an electronic keyboard, the keyboard interface is linked to a synth module, computer or other electronic or digital sound generator, which then ...
Mechanical keyboards (or mechanical-switch keyboards) are computer keyboards which have an individual switch for each key. The following table is a compilation list of mechanical keyboard models, brands, and series:
Displacement-sensitive keyboards are often found on organs. Most mechanical organs, and some electrically actuated organs, are displacement-sensitive, i.e., when a key is partially pressed, the corresponding note (pipe, reed, etc.) in the organ produces a different, quieter sound than when the key is fully pressed.
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The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the shift, alt and control state of the keyboard.