Study 01 selj-purging technique Each one of the n modules of a self-purging system compares its output with the final output of the system. In case of difference, it switches itself off, and the vote is continued with (n-l) modules.

What is the interest of such technique?

Imagine its implementation as several software tasks distributed into a computer system.

Which properties still has this system when two modules only remain active?

This question can also be applied to the double duplex redundant structure of Exercise 18.4.