National Semiconductor Corp’s third quarter figures exceeded Wall Street analysts’ estimates, and the company avoided the usual seasonal dip in sales that it has suffered for more than a decade. We had the market stay strong, and we combined that with a real focus on operations, the company said. We’re very much encouraged by this ability to execute when we set our sights on something. The company also said worldwide orders were up more than 40% compared with last year’s third quarter, and its book- to-bill ratio remained above 1 in the quarter, although orders for the quarter were still seasonally lower than in the fiscal second quarter.