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Membrane keyboard as used on the East German Robotron Z1013. A membrane keyboard is a computer keyboard whose keys are not separate, moving parts, as with the majority of other keyboards, but rather are pressure pads that have only outlines and symbols printed on a flat, flexible surface. Very little tactile feedback is felt when using such a ...
A keyboard which utilizes these abilities include the Realforce RGB. IBM's Model F keyboard is a design consisting of a buckling spring over a capacitive PCB, similar to the later Model M keyboard, but instead used membrane sensing in place of a PCB. The Topre Corporation design for switches uses a conical spring below a rubber dome. The dome ...
Model M keyboards are a group of computer keyboards designed and manufactured by IBM starting in 1985, and later by Lexmark International, Maxi Switch, and Unicomp. The keyboard's different variations have their own distinct characteristics, with the vast majority having a buckling-spring key design and uniform profile, swappable keycaps. Model ...
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:
A number of instruments have been invented, designed, and made, that make sound from matter in its liquid state. This class of instruments is called hydraulophones. Hydraulophones use an incompressible fluid, such as water, as the initial sound-producing medium, and they may also use the hydraulic fluid as a user-interface.
It was possible to split the keyboard (in other words, have some keys play one sound while other keys played another sound). The synthesizer had 61 keys, not 49 keys; There was a built-in stereo chorus effect; Instead of having just a pitch bend wheel, the CZ-3000 had both a pitch bend wheel and a modulation wheel.
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. In 1760, Jean Baptiste Thillaie de Laborde introduced the clavecin électrique, an electrically activated keyboard without sound creation.
A buckling spring is a type of keyswitch mechanism, popularized by IBM's keyboards for the PC, PC/AT, 5250/3270 terminals, PS/2, and other systems. It was used by IBM's Model F keyboards (for instance the AT keyboard), and the more common Model M. It is described in U.S. patent 4,118,611 (Model F) and U.S. patent 4,528,431 (Model M), both now ...