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KLA is one of the largest semiconductor wafer fabrication equipment, or WFE, manufacturers in the world. It specializes in the market segment of semiconductor process control, wherein machines inspect semiconductor wafers during research and development and manufacturing for defects and verify precise measurements. In this section of the market, KLA holds a majority share. It also has a small exposure to the etch and deposition segments of the WFE market. It counts as top customers the largest chipmakers in the world, including TSMC and Samsung.
Analog Devices is a leading analog, mixed signal, and digital signal processing chipmaker. The firm has a significant market share lead in converter chips, which are used to translate analog signals to digital and vice versa. The company serves tens of thousands of customers, and more than half of its chip sales are made to industrial and automotive end markets. Analog Devices' chips are also incorporated into wireless infrastructure equipment.