Personal computer turns 25

August 12 is the 25th anniversary of the IBM personal computer launch, a pairing of MS and DOS, Microsoft and the disk operating system.

"MS-DOS moved computer access from a community measured in thousands to one measured in millions," said Benn Konsynski, professor of business administration at Emory University's Goizueta Business School.

"It was a key transition from the hobbyist and 'geek' environment to business applications," he said.