 Hello, and welcome to the video lecture on software configuration for CAD system. Learning outcomes. At the end of this video lecture, students will be able to apply CAD fundamentals as well as advanced manufacturing technology to industry problems. Falling topics will be discussed in this video lecture. The recap of second session, which was about functions of graphic software, then we will be discussing about software configuration for CAD system. Functions of graphic software. Graphic software permits the interaction between user and system. While doing this, graphic software is expected to perform various kinds of functions. The functions may include generation of graphic elements with desired shape, size and orientation and finally displaying on the screen. This different kind of functions can be combined in the following five functional groups. Functions of graphical elements, which we will be applying for 2D and 3D. Graphical entity is sketching elements like dots, line, circle, arc, triangle, etc. Graphical entities are called 2D drawings. It also consists of different tools like trim, mirror, rotation, scale, which will edit different graphical elements. 3D, the primitive word mainly used for three dimensional elements like spear, cube, prism, pyramid, cylinder, etc. The second function is the transformation. It mainly consists of editing or changing in the given geometrical element or drawing or image which is displayed on the screen. Transformation mainly used for geometrical elements so that they can construct or develop application model. This transformation mainly consists of enlargement or reduction of element which is nothing but the scaling. Function of image that is translation, providing angle to image that is rotation. The third is display control and windowing function. This function provides the user with the ability to weave the image from the desired angle and at the desired magnification. These include rotation of screen or weave moving, image zoom in and zoom out. Use of hidden lines will provide user and system to achieve extra better understanding of image. But if with the help of hidden lines, drawing is getting complex, we can remove the hidden lines. With the help of transformation tools, we can edit or change the geometrical entity. This function will provide options for replace, delete, modify portions of image and at last it will give provision to store image in computer memory storage type. CRT tubes are not suited for segmenting functions. Raster scan technique is used. The first fifth one is user input functions. User friendly software so as to function as geometrical entity. Software configuration for CAD system. In the case of operations of graphic system which is used by user, there are mainly three activities which are as follows. Interaction with graphic terminal by user to create and alter images on the screen. Second one, developing a model something physical but out of the images on the screen, this type of models are called as application model. Third one, enter the model or graphical drawing into the computer memory or secondary storage. In working with graphic system, there are various activities are involved which are combined rather than sequentially. The user constructs physical model and inputs it to the memory by developing in the form of a drawing or images which will be saved to the system. The interactive computer graphics mainly consist of graphic software and it will be divided into three modules which are as follows. Graphics package, application program, application database, application program. The application program is central model of ICG graphics software. It controls the software into and retrieves data out of application database. The application program drives by graphics package. The application program will help to develop a physical model out of the image to the user and which will be displayed on the screen. Application program are developed for specific programs. The problem may consist of applications of architecture, construction, chemical engineering, mechanical components, electrical components, automobile and aerospace etc. Graphics package, it is a support between the user and the graphic terminal. It provides graphical interaction between user and system. It also works as an intermediate between graphics software and user. It consists of input subroutines and output subroutines. Input subroutines, it accepts input commands from the user and submits it to the application program, output subroutine. It controls the display terminal that means it converts physical model or application model into 2D or 3D computer pictures, application database. This database contains mathematical, logical, numerical definitions of models such as electronic circuits, mechanical components, automobile bodies. It also consists of alphanumeric information associated with model such as bill of material, mass properties etc. The contents of the database can be readily displayed on the CRT or plotted out in a hard copy format. Now pause this video for a few seconds and try to write answer to the question. Straight, true or false? Application program is the central module of ICG Graphics software. Probably you have wrote answer to the question. These are the following references. Thank you.