What is a Processor also called CPU ?
Pronounced as separate letters it is the abbreviation for central processing unit. The central processing unit (CPU) is the portion of a computer system that carries out the instructions of a computer program, to perform the basic arithmetical, logical, and input & output operations of the system.The CPU is the brains of the computer. Sometimes referred to simply as the central processor, but more commonly called processor, the CPU is where most calculations take place. The term has been in use in the computer industry at least since the early 1960s.The form, design and implementation of CPUs have changed dramatically since the earliest examples, but their fundamental operation remains much the same. The CPU itself is an internal component of the computer. Modern CPUs are small and square and contain multiple metallic connectors or pins on the underside. The CPU is inserted directly into a CPU socket, pin side down, on the motherboard.
Each motherboard will support only a specific type or range of CPU so you must check the motherboard manufacturer’s specifications before attempting to replace or upgrade a CPU. Modern CPUs also have an attached heat sink and small fan that go directly on top of the CPU to help dissipate heat.