What Is Embedded Systems?

written by:kariem samy(valeo egypt)

ما هي الانظمة المدمجة؟

An embedded system is some combination of computer hardware and software, either fixed in capability or programmable,that is specifically designed for a particular function.

An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints It is embedded as part of a complete device often including hardware and mechanical parts.

An embedded system is any device that includes a computer but is not itself a general purpose computer. It has hardware as well as software, and it is a part of a larger system and is expected to function without human intervention.

Some texts define embedded systems as computing systems or devices without a keyboard, display, or mouse.

A general definition of embedded systems is: embedded systems are computing systems with tightly coupled hardware and software integration, that are designed to perform a dedicated function.

embedded systems all systems that contain one or more processor to do specific functionalities and give responses upon receiving inputs.

The word embedded reflects the fact that these systems are usually an integral part of a larger system, known as the embedding system.

Embedding a Computer

Embedding a computer into an appliance, and that computer is not expected to be used for general purpose computing. Since it is embedded into and appliance.

Modern embedded systems are often based on microcontrollers (i.e. CPUs with integrated memory or peripheral interfaces)but ordinary microprocessors (using external chips for memory and peripheral interface circuits) are also still common, especially in more complex systems. In either case, the processor(s) used may be types ranging from general purpose to those specialized in certain class of computations, or even custom designed for the application at hand. A common standard class of dedicated processors is the digital signal processor (DSP).

الانظمة المدمجة لها اكثر من تعريف هي الانظمة التي تحتوي علي مجموعة من الهاردوير و السوفت وير ولها قدرة ثابتة و كود ثابت لعمل وظيفة معينة او هي الانظمة التي تحتوي كمبيوتر(بروسيسور,رام,ذاكرة….) ولكن ليست كمبيوتر عام بل انه لوظيفة او و ظائف معينة



Mobile Handsets – Switches and Routers – Cell phones

Image processing and consumer

cameras – Mp3 and Mp4 players – PlayStation – Printers


Engine Management System – Claimant Control System – ABS


Microwave – Washing Machines

Examples in details:

يعني ماوس الكمبيوتر من الانظمة المدمجة حيث انه يحتوي علي مجموعة من الهاردوير و السوفت وير و له وظيفة معينة

Any PC Mouse, Keyboard, or USB Device contain

Microprocessor:8-bit Microcontroller

Inside view of a Microsoft Mouse


Automotive Embedded Systems

Today’s high-end automobile may have 100 microprocessors:

    • 4-bit microcontroller checks seat belt;

    • Microcontrollers run dashboard devices.

    • 16/32-bit microprocessor controls engine




  1. mostafa


  2. ahme kariem

    great one

  3. mario murad

    these people defined embedded system in a perfect way ,good job

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