User Interfaces throughout the years

User interface design  is the design of computers, appliances, machines, mobile communication devices, software applications, and websites with the focus on the user's experience and interaction. The goal of user interface design is to make the user's interaction as simple and efficient as possible, in terms of accomplishing user goals, what is often called user-centered design. Good user interface design facilitates finishing the task at hand without drawing unnecessary attention to itself. Graphic design may be utilized to support its usability. The design process must balance technical functionality and visual elements (e.g., mental model) to create a system that is not only operational but also usable and adaptable to changing user needs.
Not only the nature evolves like Darwin said, but also user interfaces evolves throughout the years. Like the pedals in a car. Nowadays we know to find the accelerator, brake and clutch pedal because in every car is it on the same place. However, in the early years of the development of the car the pedals were not common placed in every car. In some cars the accelerator was placed  in the left, sometimes in the middle or in the right. It was not sure!
The Wright brothers, who developed a first flying plane, had to control 28 functions on their plane. Nowadays in the Airbus’ and Boeings you will find hundreds of functions controlled by systems or by the pilot itself. The cockpits are full of technology to let the pilot be able to control all these systems.

Another great example of interfaces in the past is the Citroen DS. This was a shock in the history of the production of the car. This car had an hydraulic system what helps breaking, steering, used the clutch, ensured the car height and caused high suspension comfort. However, this system was hard to handle when you drove at the first time in the car, so Citroën decided to let the car-salesman drive the car with the customer seated next to the salesman. Nowadays we can’t imagine that something like that will happen. Ergonomics became so important that every car designed nowadays looks quite the same inside, everybody knows where to find the buttons and how to handle the car. This all related to the evolution of user interface designs, evolution in the past, but also in the future.