Cache (computing) and Microcode

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Difference between Cache (computing) and Microcode

Cache (computing) vs. Microcode

In computing, a cache is a hardware or software component that stores data so that future requests for that data can be served faster; the data stored in a cache might be the result of an earlier computation or a copy of data stored elsewhere. In processor design, microcode serves as an intermediary layer situated between the central processing unit (CPU) hardware and the programmer-visible instruction set architecture of a computer, also known as its machine code.

Central processing unit

A central processing unit (CPU), also called a central processor, main processor, or just processor, is the most important processor in a given computer.

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Computer data storage

Computer data storage or digital data storage is a technology consisting of computer components and recording media that are used to retain digital data.

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CPU cache

A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory.

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Digital signal processor

A digital signal processor (DSP) is a specialized microprocessor chip, with its architecture optimized for the operational needs of digital signal processing.

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Direct memory access

Direct memory access (DMA) is a feature of computer systems that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU).

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Disk controller

A disk controller is a controller circuit that enables a CPU to communicate with a hard disk, floppy disk or other kind of disk drive.

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Flash memory

Flash memory is an electronic non-volatile computer memory storage medium that can be electrically erased and reprogrammed.

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Graphics processing unit

A graphics processing unit (GPU) is a specialized electronic circuit initially designed for digital image processing and to accelerate computer graphics, being present either as a discrete video card or embedded on motherboards, mobile phones, personal computers, workstations, and game consoles.

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Hard disk drive

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.

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Instruction set architecture

In computer science, an instruction set architecture (ISA) is an abstract model that generally defines how software controls the CPU in a computer or a family of computers.

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Microprocessor

A microprocessor is a computer processor for which the data processing logic and control is included on a single integrated circuit (IC), or a small number of ICs.

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Operating system

An operating system (OS) is system software that manages computer hardware and software resources, and provides common services for computer programs.

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Static random-access memory

Static random-access memory (static RAM or SRAM) is a type of random-access memory (RAM) that uses latching circuitry (flip-flop) to store each bit.

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Translation lookaside buffer

A translation lookaside buffer (TLB) is a memory cache that stores the recent translations of virtual memory to physical memory.

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