Hitachi and its subsidiaries are engaged in the development, production, sale and service of electrical machinery, semiconductors and computers. Co. is divided into seven business divisions: information & communication systems, electronic devices, digital media & consumer products, high functional materials, logistics & services, and financial services. Co.'s principal products and services include system integration, software, magnetic disk storage systems, servers, mainframes, LSI, memories, semiconductor materials, LCDs, nuclear/fuel/thermal generators, industrial equipment, elevators, and escalators; and optical storage media.