What is UI design and what are the contents of UI design services?

UI is short for User Interface, and UI design refers to the overall design of the software's human-computer interaction, operating logic, and interface aesthetics.

UI design services include

One is graphic design, that is, the traditional sense of "artwork". Of course, in fact, the bear is not simply the meaning of the work of art workers, but the software product product "shape" design. The second is interaction design, mainly in the design of the software operation process, tree structure, operation specifications and so on. A software product in the coding before the need to do is interaction design, and establish the interaction model, interaction specification. Third, user testing/research, here the so-called "test", the goal is precisely to test the reasonableness of the interaction design and graphic design of the beautiful, mainly through the form of the target user questionnaire to measure the reasonableness of the UI design.