Broadcom added 1,510 workers companywide for a total of 11,200 workers, representing a 15.6% rise from a year earlier. The company had about $7.4 billion in annual revenue in 2011. It completed its biggest deal to date in February, when it closed a $3.7 billion buy of Santa Clara-based chipmaker NetLogic Microsystems Inc., which had 700 employees and sizable operations around the world. The gain for Broadcom's overall employment total was partly offset by the company's quiet exit from the Blu-ray disc and digital-television business in late 2011. That came as part of a broader restructuring plan that eliminated 300 positions companywide. No. 2 Tower Semiconductor Ltd., which is based in Israel and has its North American operations in Newport Beach, has 700 local employees, flat from a year ago. Tower Semiconductor bought Newport Beach-based Jazz Semiconductor Inc. in 2008 for $170 million.