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Stages of Human-Machine Interactions

            There are 4 stages of HMI. This involves the activities of intention, selection, execution and evaluation.
                Intention: This is the first stage of HMI. In this stage the user first sets the goal for interaction.
               And then perform actions using a system to reach to the goal. This is a mental stage.
                Selection: This stage is also defined as the selection of action. In this stage order of actions are
               set. This means that the user defines how the interaction is going to take place.
                Execution: Once the course of action is set it moves for the execution. In this stage the action is
               performed.
                Evaluation: This is very important stage in HMI as the success of the interaction depends upon
               the feedback.

            We can understand these stages in simple terms through an example of celebration of a birthday
            party. Neha has an intent to celebrate her birthday party. She decides to celebrate it in a hotel. This
            stage is called intention. She selects a hotel and decides on a few friends and relatives with whom she
            would like to share her day. This is the selection stage. Finally, she picks up her friends and relatives
            in a car and drives to reach the hotel. She orders her meal. This is called the execution stage. Could
            she celebrate her birthday? Were her friends happy? Did the meal served to them reached their level
            of expectation,? Asking and answering these questions are termed as evaluation.
                                                                                Information Literacy
                       Quest                                                    Technology Literacy



                 1. Name any 2 stages of HMI.


                 2. Explain execution stage with a suitable example.




            Types of Human-Machine Interactions

            We  have  learned  about  the  HMI  and  its  stages.  Now,  lets  learn  about  the  different  types  of
            Human-Machine Interaction in this section.

            Menu Driven Interface

            This interface lets its user to interact using screens or menus. It is also a very common way of
            interaction. You switch between menus to reach your goal.

















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