PC components are the individual parts that make up a personal computer. Key components include the CPU (Central Processing Unit), which acts as the brain of the computer, and the RAM (Random Access Memory), which temporarily stores data for quick access. Other essential parts are the motherboard, which connects all components, and the power supply, which provides electricity. Storage options like HDD (Hard Disk Drive) and SSD (Solid State Drive) are crucial for saving files and programs. Additionally, the graphics card enhances visual performance, especially for gaming and graphic design. Together, these components work to create a functional and efficient computer system.