Texas Instruments (NASDAQ: TXN) sounds about as boring as the handheld calculators that made it a household name in the 1970s, but it's been a solid investment over the decades, and today the company's focus on specialized chips seems likely to ensure its continued viability in the future. 

The Dallas-based computing stalwart, founded in 1951,  is still growing revenue, earnings, margins, and cashflow at an impressive clip. It's also returning more of its fortunes to shareholders, recently announcing a 13% increase in its annual dividend. 

Texas Instruments makes specialty chips for electronics designers and manufacturers worldwide, a focus that gives it a wide and stable economic moat, according to Morningstar analysts. Competitors can't easily encroach upon its business because these products require unique engineering and customer relationships that take years to develop.

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Source Fool.com