One of IBM's most influential CEOs, John Opel, died late Thursday at the age of 86, IBM confirmed on Friday. The former executive was CEO of the company from January 1981 to January 1985 and oversaw the launch of the original IBM PC, the 5150, in August 1981. He was credited with having the foresight to support home computers at a time when IBM was still known by most for its mainframes. Opel had IBM invest a minority stake in Intel in 1984 that helped establish its chips as the main choice for PC processors, even through today.