explain on Instagram: "At the heart of every computer sits the CPU — the Central Processing Unit — often called the brain of the machine. Its job is simple in theory but insanely complex in practice: it fetches instructions, decodes them, and executes them billions of times per second.Modern CPUs are built with multiple cores, which act like separate workers handling tasks in parallel. The more efficient the architecture, the faster your system feels — whether you’re gaming, editing, or just ope