HIS-HMI WS05
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Design View
Tasks
A necessary component of every HMI-application is a finite set of well
defined tasks which have to be solved by some users using a certain
machine (or distributed computing technical environment). A task is
defined by at least one goal state, which has to be addressed,
and
finitely many preceeding states which are pre-conditions of the
goal
state. An ordinary task is a task for which known sequences of possible
actions are known, which transform certain known beginning
states into
one or more goal states. This include the case, that more than one
user
can be involved in such a task process and that several users are
acting in parallel or are interchanging knowledge and
data.