In this work we introduce a type of hybrid equation closely related to thos
e that appear when a digital controller or a hybrid controller of a certain
class is interconnected with a full non-linear continuous-time system. For
these equations we obtain results concerning existence, uniqueness and non
continuability of solutions. This results are used to study the behaviour o
f the hybrid dynamical systems associated with those equations. We establis
h relationships between the stability of these hybrid dynamical systems and
the ones corresponding to their associated discretized systems on one hand
, and to their associated linearized systems on the other. We also characte
rize their stability, uniform asymptotic stability and exponential stabilit
y. These results are applied to the exponential stabilization of a non-line
ar control system by digital or hybrid controllers.