1) Differentiate between the following concepts as used in CG: a. Emmissive and non-emmissive displays b. Horizontal and vertical retrace 2) Discuss any TWO advantages that flat panel displays have over CRT displays. 3) Define the term output primitive, state any TWO output primitives and an attribute for each. 4) Discuss in detail how raster scan displays work. 5) Discuss how a CRT display works and highlight the role of any TWO component parts. 6) Discuss any FOUR application areas of CG.