A processor, also known as a central processing unit (CPU), is the primary component of a computer that performs calculations and executes instructions. It interprets and processes data from various software applications, enabling the computer to function effectively. The speed and efficiency of a processor are measured in gigahertz (GHz), indicating how many cycles it can perform per second. Modern processors often have multiple cores, allowing them to handle several tasks simultaneously. This multi-core design improves performance for applications that require significant processing power, such as video editing or gaming. Additionally, processors are found in various devices, including smartphones, tablets, and servers, making them essential for everyday technology.