Editing Buckling spring (section)

==Operation==
{{Listen |filename=IBM M2 sound.ogg |title=IBM M2 sound |description=The characteristic sound produced by the buckling-spring mechanisms of a Model M keyboard }}

The [[coil spring]] tensed between the [[keycap]] and a pivoting hammer [[Buckling|buckles]] (i.e. kinks or collapses) at a certain point in its downward traverse, providing auditory and tactile feedback to the keyboard operator. Upon buckling, the hammer is pivoted forward by the spring and strikes an electrical contact which registers the key press. In a Model M, the electrical contact is a membrane sheet similar to that of a modern [[Keyboard technology#Dome-switch keyboard|dome switch keyboard]].