What are the Fifteen components of the system unit and their functions?

The system unit, also known as the computer case, houses several critical components, each with specific functions. Key components include the motherboard (the main circuit board connecting all parts), CPU (central processing unit, which performs calculations and processing), RAM (random access memory, used for temporary data storage during operation), and storage devices (like HDDs or SSDs for permanent data storage). Other important components are the power supply unit (provides electrical power), graphics card (renders images and video), cooling systems (prevent overheating), and various input/output ports (facilitate communication with peripherals).