The sound of an IBM Model M from 1986, with the characteristic buckling spring sound. (en)
The sound of an IBM Model M13 from 1999—quieter, with less spring noise. (en)
A 1984 IBM Model F, for comparison with the Model M. Although it too uses buckling springs, its sound is significantly sharper and more metallic due to the spring plates directly contacting thePCB. (en)
