Siliconix, Inc.. The Group's principal activities are to design, manufacture and market power and analog semiconductor products. These products are used in instrumentation, industrial and consumer applications. The products manufactured by the Group are segregated into two categories: Discrete devices and integrated circuits. Discrete devices are active components that generate, control, regulate and amplify or switch electronics signals or energy. Integrated circuits consist of a number of active and passive components that are interconnected on a single chip. The Group serves communications, computer and automotive markets. The Group's operations are conducted in the United States, Europe, Japan, Taiwan, Singapore and Asia Pacific.