Headquartered in Dallas, Texas, USA, Ti is a global semiconductor company, a world leading designer and supplier of digital signal processing and analog technology, and an engine to promote the process of electronic digitization. The company has factories, branches or offices in more than 30 countries. It has the following business departments: 1. Semiconductor Department: in 1997, semiconductor revenue accounted for 83 [%] of the total revenue. The main products are DSP solutions, microcontrollers and ASIC. 2. Education products division: at present, TI company occupies a leading position in portable education technology. 3. Materials & Control: this department serves the automotive, climate control, electronics, communications, optics and aircraft markets. 4. The main IC products of digital light processing include: digital signal processor, analog and mixed signal devices, digital logic, ASIC, microcontroller, voice and graphics processor, programmable logic, military devices, etc.