Which type of computer performs all its functions independently?

A personal computer performs all its functions independently because it is designed to operate on its own without the need for a network or connection to a larger system. It has its own hardware and software, allowing users to perform tasks such as word processing, gaming, web browsing, and other applications without relying on external resources. This autonomy is a key characteristic of personal computers, distinguishing them from network computers, which rely on network servers for their functionality, and mainframe computers, which are designed for large-scale processing and often work in conjunction with other systems. Laptops, while also personal computers, share the same independence in operation and are essentially portable versions of personal computers. However, the term "personal computer" generally encompasses all standalone machines, including desktops and laptops, highlighting its definition as an independent computing device.