International Business Machines Corp., the world’s largest computer-services provider, reported a 22% increase in second-quarter profit and boosted its full-year forecast as sales climbed in emerging markets.

Net income rose to $2.77 billion, or $1.98 a share, from $2.26 billion, or $1.55, a year earlier, the Armonk, N.Y-based company said yesterday in a statement. Sales gained 13% to $26.8 billion, beating the average estimate of $25.9 billion in a Bloomberg survey of analysts.

The chief executive officer, Sam Palmisano, increased research spending and expanded software and services to rely less on hardware sales. By targeting emerging markets, he has also cut reliance on the slower-growing American and European economies. Revenue from Brazil, India, China, and Russia climbed 31% in the quarter.

“IBM continues to be one of those companies that you can count on in both good and bad times,” an analyst with Edward Jones & Co. in St. Louis, Andy Miedler, said. “For IBM to do this in an extremely challenging market is very impressive.” He advises buying the stock and doesn’t own any.

Google Inc. and Microsoft Corp. both reported results yesterday that trailed estimates, weighing down technology shares after the end of regular trading. Google, owner of the most popular search engine, fell as much as 12%, and CEO Eric Schmidt described the economic environment as “challenging.” Shares of Microsoft, the biggest software maker, declined 6.5%.