Teradyne, Inc. engages in the development and sale of automatic test systems. The company is headquartered in North Reading, Massachusetts and currently employs 6,500 full-time employees. The firm designs, develops, manufactures and sells automated test systems and robotics products. The firm operates through four segments: Semiconductor Test, System Test, Wireless Test and Robotics. The Semiconductor Test segment includes operations related to the design, manufacturing and marketing of semiconductor test products and services. The System Test segment includes operations related to the design, manufacturing and marketing of products and services for storage and system level test, defense/aerospace instrumentation test, and circuit-board test. The Wireless Test segment includes operations related to the design, manufacturing and marketing of wireless test products and services. The Robotics segment includes operations related to the design, manufacturing and marketing of collaborative robotic arms, autonomous mobile robots and advanced robotic control software.