A DIY PC, or "Do It Yourself Personal Computer," refers to the process of building a computer from individual components rather than purchasing a pre-assembled system. This approach allows users to customize their machines according to specific needs, such as gaming, graphic design, or general use. Key components include the motherboard, CPU, RAM, storage, and power supply. Building a DIY PC can be a rewarding experience, as it provides hands-on knowledge about how computers work. It also often results in better performance and value for money compared to off-the-shelf options. Additionally, users can upgrade parts easily in the future, ensuring longevity and adaptability.