Modelling
Each model is a purpose-dependent representation. According to the purpose of modelling, it might be required that different traits are represented or respectively ignored, therefore, we shall define model as follows:
Definition 2.1: Model is a purpose-dependent, finite, simplified, but still adequate representation of whatever is modelled,allowing us to abstract from its unimportant properties and details and to concentrate only on the most specific and most important traits.
In a typical representation of a process, the assumption is made that somebody or something acts on something else (input) to create or achieve a result (output).Apparently, such a scenario would not represent the really important fact that processes are time-dependent, i.e. they “progress” with time. More precisely, it is the process of creation and development of models that is understood as modelling. (Avgoustinov N., Modelling in Mechanical Engineering and Mechatronics, pg. 9)
Programming Language
Computer aided programming involves special symbolic programming languages that determine the coordinate points of corners, edges, and surfaces of the part. A programming language is a means of communicating ; it involves the use of symbolic characters. The programmer describes in this language the component to be processes, and the computer converts that description to commands for the NC machine (Kalpakjian S., Schmid S.R., Manufacturing engineering and technology, 5th Edition, pg. 1160)
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