Engineering is a practice of gaining knowledge from various fields to develop new ideas and apply them in a form which will be useful to the society. People practicing engineering are called engineers who gain and apply scientific, practical, social, mathematical and economic knowledge in development of machines, systems, structures, devices, processes and materials.
Engineering is a broad discipline and is regularly divided into several categories. These fields of engineering can be differed according to the different areas of applications. Traditionally there were six fields of engineering namely; Aerospace, Mechanical, Chemical, Civil, Electrical and Biomedical. With the advancement of technology new fields have emerged like computers, automobile and so on.