What is a heat sink and what does it do in the system unit?

A heat sink is a component used in electronic systems to dissipate heat generated by processors or other high-temperature components. It typically consists of a metal base with fins or other structures that increase surface area, allowing for better heat dissipation into the surrounding air. By transferring heat away from critical components, heat sinks help to maintain optimal operating temperatures, prevent overheating, and ensure the reliability and longevity of the system unit.