Automatic Testing Equipment (ATE) is a type of testing equipment used to automate the testing process of electronic components, assemblies, and systems. ATE is used to test the functionality of a product or system, and can be used to detect faults or defects in the product or system. ATE typically consists of a computer, test software, and a variety of test instruments, such as oscilloscopes, signal generators, and power supplies. ATE can be used to test a wide range of products, from simple electronic components to complex systems.