Model F keyboard
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The Model F was a series of computer keyboards produced mainly from 1981–1985 and in reduced volume until 1994 by IBM and later Lexmark. Its mechanical-key design consisted of a buckling spring over a
Model F capacitive pads from an opened assembly
Corrosion occurring on a Model F 122 terminal keyboard along with dust
A comparison between a Model F spring (left) and a Model M spring (right); the Model M uses a spring with fewer windings and smaller plate for the plastic membrane underneath.
IBM Model F 122 key Keyboard
Keyboard technology
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The technology of computer keyboards includes many elements. Many different keyboard technologies have been developed to meet consumer demands and optimized for industrial applications. The standard f
Keyboard construction of a typical notebook computer keyboard, in four layers
A typical membrane assembly
Atari 400 keyboard
Most keyboards are rigid, but this keyboard is flexible.