What is the Full Form of CPU, 3 Types of CPU

what is the full form of CPU

What is the Full Form of CPU

Full Form of CPU

The full form of CPU is “Central Processing Unit”. A central processing unit, also called a central processor, main processor, or just a processor, is the electronic circuit that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output operations specified by the instructions in the program.

What is the Full Form of CPU

The full form of CPU is Central Processing Unit. It is also known as the brain of the computer. It carries out instructions and computer programs/codes and performs all the basic arithmetical and logical operations. CPU is installed in the motherboard on a specific area known as the CPU socket. Traditionally the term CPU refers to a processor which includes a control unit and arithmetical logical unit.

Full Form of CPU: Components

Above we have described the full form of CPU and have defined CPU. In this section, we are going to know about the components of the CPU. There is two component of the CPU one is ALU (Arithmetic Logic Unit) and the second one is known as Control Unit (CU). ALU is the key part of the CPU which is mainly responsible for all the arithmetic and logical operations inside the CPU. On the other hand, the CU (Control Unit) has the responsibility for performing particular tasks. Know more at wiki.


Registers are special types of memory device which has to be processed or are already processed by the CPU.

Full Form of CPU: Types of CPU

CPUs can be divided into three major categories:
  1. Transistor CPUs
  2. Small Scale Integration CPUs
  3. Large Scale Integration CPUs

Full Form of CPU: History

The term CPU was first used in Computer firms in the early 1960s. Initially, the term CPU was used to define a device for software execution and it came with the advent of the stored program computer. Some of the important events related to the history of CPU are as follows:
  • Silicon, the basic component of processors, was discovered by Baron Jons Jackob in 1823.
  • In 1903, Nikola Tesla patented the electrical logic circuits (gates or switches).
  • In 1947, the first transistor was invented by John Barden, Walter Brattain, and William Shockley at the Bell Laboratories.
  • In 1958, Robert Noyce and Jack Kilby developed the first integrated circuit.

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