Delivering satisfaction with Quality

H-M Interface

Human-Machine Interface (HMI)is where people and technology meet. This people-technology intercept can be as simple as the grip on a hand tool or as complex as the flight deck of a jumbo jet. The task of an HMI is to make the function of a technology self-evident. Much like a well-designed hammer fits the user’s hand and makes a physical task easy; a well designed HMI must fit the user’s mental map of the task he or she wishes to carry out.

In nearly every technological solution, the effectiveness of the HMI can predict the acceptance of the entire solution by the intended users. XtremeEdge measures the HMI effectiveness by two components – learnability and productivity, also known as Quality of Use.

XtremeEdge strictly follows ISO 9241 standard which defines three components of Quality of Use applicable to the design of HMIs:

Does the product do what the users require? Does it do the right things?


Can the user learn the HMI quickly? Can they carry out their tasks with minimum expended effort, including a minimum of errors? Does it improve the productivity/effort ratio? Does it do things right?


Do users express satisfaction with the product? Does the new product reduce stress? Do the end users now have a more satisfying job?