Question

What is cpu. Describe the various parts of cpu.​

Answer 1

Answer:

A central processing unit (CPU), also called a central processor or main processor, is the electronic circuitry within a computer that executes instructions that make up a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. The computer industry used the term "central processing unit" as early as 1955. Traditionally, the term "CPU" refers to a processor, more specifically to its processing unit and control unit (CU), distinguishing these core elements of a computer from external components such as main memory and I/O circuitry.

The form, design, and implementation of CPUs have changed over the course of their history, but their fundamental operation remains almost unchanged. Principal components of a CPU include the arithmetic logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations, and a control unit that orchestrates the fetching (from memory) and execution of instructions by directing the coordinated operations of the ALU, registers and other components.

Most modern CPUs are microprocessors, where the CPU is contained on a single metal-oxide-semiconductor (MOS) integrated circuit (IC) chip. An IC that contains a CPU may also contain memory, peripheral interfaces, and other components of a computer; such integrated devices are variously called microcontrollers or systems on a chip (SoC). Some computers employ a multi-core processor, which is a single chip containing two or more CPUs called "cores"; in that context, one can speak of such single chips as "sockets".

Array processors or vector processors have multiple processors that operate in parallel, with no unit considered central. There also exists the concept of virtual CPUs which are an abstraction of dynamical aggregated computational resources.

The fundamental operation of most CPUs, regardless of the physical form they take, is to execute a sequence of stored instructions that is called a program. The instructions to be executed are kept in some kind of computer memory. Nearly all CPUs follow the fetch, decode and execute steps in their operation, which are collectively known as the instruction cycle.

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Answer 2

Answer:

CPU which stands for Central Process Unit is the main chip or the main processor of a computer system.

Explanation:

Every computer system is based on Central Processing unit,whether it is an analog type, digital or hybrid. Ever computer must have CPU in order to perform its function.

When the user enters the instructions, the CPU works to execute those instructions, work on it and provides the suitable accurate result which gets displayed in/through any output device. In other word we can say that CPU is the Central System Processor of the Computer, which controls and execute all the arithmetical and logical operations in the computer.

CPUs have two components:

1. The arithmetic logic unit (ALU), which controls all the arithmetical and logical operations.
2. The control unit (CU), which extracts instructions from memory and decodes and executes them, calling on the ALU when necessary.

There is also another unit known immediate access store; but the above two are usually written.

A CPU consists of various parts:

1. The motherboard.
2. The memory:

• RAM
• ROM

3. A Fan (used for cooling)

4. The microprocessor.

5. Various ports.

6. Optical drive slot/disc drive slot.

Sometimes, a battery also.

At the very beginning it is shown that how a CPU works.