CPU Full Form | What is the Full Form of CPU
CPU Full Form - Central Processing Unit
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Central Processing Unit
- CPU stands for Central Processing Unit.
- It's also referred to as a brain of the computer.
- It carries out instructions and computer programs and performs all the basic arithmetical and logical operations.
- CPU is installed within the motherboard on a selected area called CPU socket.
- Traditionally the term CPU refers to a processor which includes control unit and arithmetical logical unit.
Central Processing Unit (CPU) = Arithmetical Logical Unit (ALU) + Control Unit (CU)
Components of CPUs
- Arithmetical Logic Unit :
- This is often a key part of the CPU. This is often responsible of performing all the logical and arithmetical operations.
- Control Unit :
- It's the most important a part of the CPU. It instructs the entire computing system to hold out a particular task.
- Registers :
- Registers are the special type of memory devices. They store the data that need to be processed and already processed by the processor.
Memory or Storage Unit
- This unit can store instructions, data, and intermediate results.
- This unit supplies information to other units of the pc when needed.
- It's also referred to as internal storage unit or the most memory or the first storage or Random Access Memory ( RAM ).
- Its size affects speed, power, and capability.
- Primary memory and secondary memory are two sorts of memories within the computer.
- Functions of the memory unit are −
- It stores all the data and therefore the instructions required for processing.
- It stores intermediate results of processing.
- It stores the final results of processing before these results are released to an output device.
- All inputs and outputs are transmitted through the most memory.
Types of CPUs
- CPUs are often divided in three major categories :
- Transistor CPUs
- Small Scale Integration CPUs
- Large Scale Integration CPUs
- The term CPU was first used in computer industry within the early 1960's.
- Initially the term CPU was used to define a device for software execution and it came with the advent of the stored program computer.
- A number of the important events related to history of CPU are as follows:
- Silicon, the essential component of processors, was discovered by Baron Jons Jackob in 1823.
- In 1903, Tesla patented the electrical logic circuits (gates or switches).
- In 1947, The first transistor was invented by John Barden, Walter Brattain and Shockley at the Bell Laboratories.
- In 1958, Robert Noyce and Jack Kilby developed the first microcircuit.
- On 15 November 1971, Intel introduced the first microprocessor, the Intel 4004.
- In March 1991, AMD introduced the AM386 microprocessor family.
- On 22 March 1993, Intel released the Pentium processor, a 60 mhz processor with 3.1 million transistors.
- On 4 January 2000, Intel released the Celeron 553 mhz bus processor.
- On 22 April 2006, Intel released the Core 2 Duo processor E6320.
- In November 2008, Intel released the first Core i7 Desktop processors.
- In January 2010, Intel released the first Core i5 Mobile processors (i5-430M and i5-520E).