Explain the fact that there are several kinds of styles of private interfaces.

Give the definition of interaction and interface.

The user interface, in the industrial design field of human–machine interaction, is the space where interaction between humans and machines occurs. The goal of interaction between a human and a machine at the user interface is effective operation and control of the machine, and feedback from the machine which aids the operator in making operational decisions. Examples of this broad concept of user interfaces include the interactive aspects of computer operating systems, hand tools, heavy machinery operator controls, and process controls. The design considerations applicable when creating user interfaces are related to or involve such disciplines as ergonomics and psychology.

A user interface is the system by which people (users) interact with a machine. The user interface includes hardware (physical) and software (logical) components. User interfaces exist for various systems, and provide a means of:

· Input, allowing the users to manipulate a system

· Output, allowing the system to indicate the effects of the users' manipulation

Explain the fact that there are several kinds of styles of private interfaces.

There can’t be one universal instrument, no universal program, no universal interface for the computer user, because the aims are always changing, depending on current tasks. The simple graphic editor doesn’t have a graphic user interface, functionality of his better “companion”, but every of them have the right for existence.

There is no such program or interface, which respond to every user requirement in all times.

3. What is a system?

System is the set of objects and relations between them, which are connected in such a way that in the end they constitute the whole.

Any object can be a part of some system.

With the help of the word “system” we can refer either to real objects or to abstract notions.

System always consists of few objects or of elements, interconnected with each other.

The perception of the notion of the system can be subjective (elements are understood by the person as the system) or common (the strong combination of words)

4. What properties must the object have to be called a system?

There exist 4 options, which the object should carry to be called a system.

1) The integrity (system is the integral set of elements, which interact with each other. Elements exist only on the system)/

2) The connection (between the elements of the system there are the significant connections, which define the integrative qualities of the system. The connection can be real, informational, straight, and reverse. The connections between the elements inside of the system must be stronger than connection of distinct elements with the outer environment)

3) The organization (the presence of the system-formational factors in the system elements just assumes the opportunity of its creation. For the arising of the system some ordered connections should exist – the structure, organization of the system)

4) Integrative qualities (Systems has integrative qualities – the qualities which are inherent to the system, but they are not inherent to any of its elements separately)

Date: 2015-12-24; view: 1050