Due to the uncertainty of the world economy, most of the market research companies are relatively conservative about the world's semiconductor market forecasts in early 2012, growth rate are low with single digits, about 2 to 3 percent.In March and April, people think the world economic is in recovery,there is strong demand for consumer mobile phones and media tablet PCs and other wireless products, stimulating the semiconductor market, followed by some well-known market research companies have raised their forecasts. In March, Gartner, Inc. rose to 4% from the original forecast of 2.2 percent, reaching $ 316 billion, in April IHSiSuppli raised to 4.3 percent from 3.3 percent, reaching $ 324.6 billion, the leaders of IDC is the most optimistic, after last year's growth 3.7% (up to $ 301 billion), this year it will be continued growth of 6 to 7 percent. Looking ahead, the IHS think that, if the world economy does not occur unforeseen recession, semiconductors have not committed a serious error that the world semiconductor market in recent years will continue to climb ,in 2016 it will reach $ 412.8 billion ,between 2011 and 2016,the average annual growth rate is 5.8%, it is also far from satisfactory. The driving force in the semiconductor market is as mentioned above, smart phones and tablet PCs, in addition to Apple's iPhone and iPad, there are a bunch of competing products also contributing to the sales of the semiconductor. Specific semiconductor products are NAND flash memory, logic circuits and microprocessors which are the most powerful, and the former two types are mainly due to the development of tablet PCs and smart phones, the latter depends on a laptop computer and is the debut of the ultra-pole of this