Nvidia (NVDA 3.40%) has become the second-largest company in the world, with a market capitalization of $3.3 trillion as of this writing. The terrific demand for artificial intelligence (AI) chips is playing a key role in helping the chipmaker achieve this position.The semiconductor giant's impressive rise can be justified by the phenomenal increase in its revenue and earnings over the past couple of years, thanks to the dominant position it has built for itself in the market for AI chips. After all, Nvidia ...