  The erasure of a classical bit of information is a dissipative process. The
minimum heat produced during this operation has been theorized by Rolf Landauer
in 1961 to be equal to $k_B T \ln 2$ and takes the name of Landauer limit,
Landauer reset or Landauer principle. Despite its fundamental importance, the
Landauer limit remained untested experimentally for more than fifty years until
recently when it has been tested using colloidal particles and magnetic dots.
Experimental measurements on different devices, like micro-mechanical systems
or nano-electronic devices are still missing. Here we show the results obtained
in performing the Landauer reset operation in a micro-mechanical system,
operated at an effective temperature. The measured heat exchange is in
accordance with the theory reaching values close to the expected limit. The
data obtained for the heat production is then correlated to the probability of
error in accomplishing the reset operation.
