NEC Corporation is a diversified company. The Information Technology (IT) Solution segment provides system integration, supporting, outsourcing and cloud services, servers, mainframes, super computers, wireless access devices and software. Carrier Network segment provides backbone network system, network access and operation support system, among others. Social Infrastructure segment provides broadcasting video system, control system, transportation and public system, fire and disaster prevention system, and others. Personal Solution segment provides smart phones, cellular phones, corporate computers, tablet terminals, mobile and wireless routers, and Internet service and display solution. The Others segment provides smart energy solution, electronic components and lighting fixtures. In February 2014, it acquired a 60% interest in Infosec Corp. On March 25, 2014, it fully acquired NEC Fielding Ltd. In May, 2014, it announced completed the acquisition of A123 Energy Solutions.