Design is familiar in many fields including fashion, products, architecture, engineering, science, and software development. Design can be observed in different areas of lives, even when people do not notice that. Everyday products are designed, as well as interiors, buildings, yachts, etc. Design is a process where people create and shape artifacts that solve problems. In software, for example, design means crafting software that does jobs users want done. Software designers intentionally support practices, worlds, and identities of the software’s users. Designers have accumulated much practical wisdom that is expressed with design principles such as separation of concerns, modularity, abstraction, layering, wholeness, utility, resiliency, beauty, and timelessness. Design principles in computing guide us to ways of building machines whose behaviors are useful and meaningful in their user communities[1]. Design principles in everyday life show scheme of a product, overall look and complexity. People can choose space, texture, color, shape, form etc. All those, seemingly simple things, make up a product. Hyysalo differentiated five levels of design[2]. As an example we can use power buttons in mobile phones.
Decisions made on the different levels of design cannot be made separately. They are interconnected, linked and influence each other. The complexity of design requires research, the ability to see both the whole and the details, and the skill to analyze them. Design may