What is the main circuit board in a computer called?

The main circuit board in a computer is called the motherboard. It serves as the central hub where various components of the computer communicate with each other. The motherboard houses the CPU, memory (RAM), and expansion slots for additional cards like graphics or sound cards. It also has connectors for storage devices and peripheral interfaces, allowing for overall system integration.

The CPU, while crucial for processing tasks, is just one component that is installed onto the motherboard itself. Memory modules are separate components that plug into the motherboard to provide volatile memory but do not encompass the entire system's connectivity. The graphics card, likewise, is an expansion card that can be installed onto the motherboard to enhance graphical performance, but it operates independently of the motherboard's core functions. Therefore, understanding the role of the motherboard is essential for comprehending how different parts of a computer interact and function together.