What is a thin lightweight mobile computer with a screen in its lid and a keyboard in its base?

A thin lightweight mobile computer with a screen in its lid and a keyboard in its base is commonly referred to as a laptop or notebook. These devices are designed for portability and typically feature a compact design, allowing users to easily carry them for work or leisure. Laptops combine the functionality of a desktop computer with the convenience of a mobile device, making them popular for various tasks, from productivity to entertainment.