This components extensively used teh specialized and / or general purpose software. Often it may development for typical application and to perform calculations in the design process. It is also important because most of the time the calculations involved in design process is so complicated that simple calculator may not solve manually. For example if we want to solve simultaneous equations of order 100 it is not possible manually but it can be easily solved with the help of compute. From this example it is obvious that by using the computer to perform such a tedious and time consuming task the designer is free to give more attention towards the interpretation of results which would definitely enhance the efficiency and creativity of the designer.