What is the Full Form of CPU and how it works?

CPU Full Form: CPU stands for Central Processing Unit. It is the brain of the computer. It processes input data and produces output. It performs millions of calculations in seconds to run a program. It is the part of the computer where all arithmetic and logic operations take place. There are many questions in competitive exams from computer and CPU is a important topic. Read this article to know all about CPU. If you are preparing for competitive exams and are looking for expert guidance, you can check out our General Knowledge Ebook Free PDF: Download Here. 

History of CPU

The time period CPU turned into first used withinside the computer enterprise was the early 1960s, the term CPU was used to define a device for running software, but with the advent of self-programmed computers. Here are some of the important events related to CPU history: Silicon, the basic component of the processor, was discovered by Baron Jons Jackob in 1823. In 1903, Nikola Tesla patented an electrical good judgment circuit (gate or switch). In 1947, the first transistor was invented by John Baden, Walter Brattain, and William Shockley at Bell Labs. On November 15, 1971, Intel announced its first microprocessor, the Intel 4004. On March 22, 1993, Intel released the Pentium processor, his 60 MHz processors with 3.1 million transistors. On January 4, 2000, Intel released its Celeron 553 MHz bus processor. On April 22, 2006, Intel released the Core 2 Duo processor E6320. In November 2008, Intel released its first Core i7 desktop processor In January 2010 Intel released the first mobile Core i5 processor.

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Components or different parts of the CPU

1. Arithmetic Logic Unit (ALU): This is the critical part of the CPU. Responsible for overseeing all numerical and logical functions such as subtraction, addition, division, and multiplication.
2. Control unit (CU): CU is the main component of the CPU. It directs tasks throughout the system and regulates all computer activity that occurs.
3. Memory or Register: A register is a specific kind of memory. Memory stores information that the processor needs to process or has already processed.

What is the work of the CPU?

The job of each CPU is to execute different kinds of instructions (called programs) stored in the computer. Therefore, the CPU follows certain predefined cycles during program execution. CPU instruction cycles are executed sequentially, with each instruction processed by the CPU consisting of the following steps:

• Read instructions from memory
• Sort out the instructions
• Find the address of the operand
• To get the operand to perform the desired operation
• Find the desired target storage address and save the result to the target memory.