We constantly hear of semiconductors companies being acquired by other semiconductor companies. For a student who has just entered the workforce, it might be a bit diffuclt for him/her to assimilated the whole scene and identify each player under various categories - micros, mempories, RF etc. The diagram prepared by the folks at EFT ON is a nice way to visualize whats been happening so far: http://www.efton.sk/t0t1/semic_change.htm