Dual Screens

It seems like there might be a slight confusion in your question. There is no food named "dual screens" found in restaurants in the USA. However, there is a device called a "dual screen" which is commonly used in many settings, including restaurants.

A dual screen is a setup that consists of two computer monitors or screens that are used together. In the context of restaurants, dual screens are often used by waitstaff to view and manage orders, customer information, and other relevant data.

If you are interested in learning more about how dual screens are used in the restaurant industry or in other settings, I would be happy to help! Just let me know what you would like to know.