Print Apple’s decision Monday to add nearly 4,000 jobs in greater San Diego through 2026 is likely to be a boon for the county’s universities, which produce the kind of software and hardware engineers the famed company badly needs. To differing degrees, the schools also focus on the areas where Apple says it needs research assistance: wireless technology, 5G, artificial intelligence, silicon engineering and cybersecurity. The county’s five major universities serve more than 15,000 engineering and computer science students, and have corporate partnerships with such companies as Northrop Grumman, Boeing, SDGE and Qualcomm. About 9,200 of those students are at UC San Diego’s Jacobs School of Engineering, the largest program of its kind on the West Coast. And it’s about to get bigger. The school is constructing two large research buildings, one which was heavily shaped by faculty member Don Norman, a former research executive at Apple.