Central Processing Unit(CPU)

What is CPU? ,Functions of CPU,Parts of CPU

1. CPU (CENTRAL PROCESSING UNIT)

2. WHAT IS A CPU? CPU stands for Central Processing Unit. It is the important part of any computer system . It is also called as “brain of the computer”, ”central processor”, “main processor” or simply “processor”. The main tasks of a CPU are: Perform all data processing operations. Store all type of data and results. Controls and coordinate every part of computer.

3. WHAT IS A CPU? The CPU contains at least one processor, which is the actual chip inside the CPU that performs calculations. Dual-core processor : CPU with two processing cores . Quad core processor : CPU with four processing cores . Clock speed : rate at which a processor can complete a processing cycle. It is typically measured in megahertz or gigahertz.

4. CPU CPU chip

5. FUNCTIONS OF CPU CPU functions are primarily classified as: FETCH : fetches every instructions from memory. DECODE : convert the instructions into machine readable format. EXECUTE : execute the instructions and perform calculations. STORE : result after execution is stored in memory and given as output.

6. PARTS OF CPU ARITHMETIC AND LOGIC UNIT(ALU) CONTROL UNIT(CU) MEMORY UNIT REGISTERS

7. Arithmetic logic unit (ALU) ALU is divided into 2 units: Arithmetic Unit(AU) Logic Unit(LU) Arithmetic unit performs all arithmetic operations like addition, subtraction, division, multiplication. Logic unit performs all logic operations like comparing, selecting, matching, and merging of data.

8. Control unit (cu) It controls the operations of all parts of the computer. CU does not carry out any actual data processing operations and does not store data. Major functions of CU: Controls the transfer of data and instructions. Coordinates all units of computer. Fetch instructions from memory. Communicates with input-output devices.

9. MEMORY UNIT Memory unit stores data, instructions and intermediate results. It is also known as “internal storage”, “primary storage”, “RAM”, or “main memory”. It gives data to other parts of computer.

10. REGISTERS They are temporary storage areas inside CPU. Also called as processor registers. Registers may hold instructions, storage addresses, or any other data. I nstructions may specify registers as part of the instruction.

11. REFERENCE https://en.wikipedia.org/wiki/Central_processing_unit https://www.tutorialspoint.com/computer_fundamentals/computer_cpu.htm https:// turbofuture.com/computers/What-are-the-basic-functions-of-a-CPU https://techterms.com/definition/cpu

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