Impressive growth in an important product segment was the secret sauce behind Texas Instruments' (NASDAQ: TXN) double-digit stock rise over the past few trading days. On Tuesday, the company posted its first quarterly earnings release this still-young year, and while it missed on key fundamentals, it still provided plenty of reason to become (or remain) bullish on its stock. With that blustery tailwind, Texas Instruments finished the week up by more than 11% in value, according to data compiled by S&P Gl ...