CPU of computer

CPU(Central Processing Unit)
The full-form of CPU is the shorter form of word Central Processing Unit. The main part of human is brain so the CPU is the brain of Computer. Mostly CPU is called as Processor only but some times it is referred to simply as the central processor. And it is where most calculations take place. In the term of computing power, the CPU is the most important element of a computer system.
The first CPUs were used in the early 1960s. They were custom designed as part of a larger computer, making them prohibitively expensive. The CPUs requires one or more than one printed circuit boards. The CPU is housed in a single chip which is called a Microprocessor.Since the 1970's the class of the microprocessor of CPUs has completely overtaken all other the CPU implementation.
The CPU is itself a internal components of the computer. The modern CPUs are small than old ones and also has square in shape, it contains multiple metallic connectors or pins on the underside. And the CPU is inserted into the CPU socket and its pins are side down on the motherboard. Each motherboard will support only a specific type or range of the CPU so a person mustly check the motherboard manufacturer's specifications before attempting to replace or upgrade a CPU. In the modern CPU, it also have an attached the heat sink and small fan which the air directly goes to the top of computer and helps to prevent from the excessive heat which can damage the computer.
There are 2 typical components of the CPU which are given below;

• The arithmetic logic unit (ALU), which performs arithmetic and logical information.
• The control unit (CU), which extracts instructions from memory, decodes and executes them, calling on the ALU when necessary.