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Initial force Actuation force Spring force Actuation point Total travel Mounting type Factory lube SMD LED compatibility Key stroke lifespan Drop x Invyr Kailh Holy Panda [22] MX Type stem Tactile N/A 67 g 67 g 67 g 1.2 mm 4.0 mm Plate mounting No Yes 80 million Drop Kailh Halo True [23] MX Type stem Tactile N/A 60 g 54 g 100 g 1.9 mm 4.0 mm
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:
Snap ratio is calculated as the difference between the actuation force and the contact force of a switch divided by the actuation force. The actuation force is the force required to collapse the membrane of a rubber switch, and the contact force is the force required to maintain rubber-switch contact closure with a printed circuit board ...
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.
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 ...
This style of keyboard has been met with a poor reception. John Dvorak wrote that it was "associated with $99 el cheapo computers". [4] The keys on ZX Spectrum computers are "rubber dome keys" which were sometimes described as "dead flesh", [5] while the feel of the IBM PCjr's chiclet keyboard was reportedly compared to "massaging fruit cake". [6]