Embedded system

DHCOM Computer On Module - AM35x

An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system. It is embedded as part of a complete device often including hardware and mechanical parts. Embedded systems control many devices in common use today.

Overview

Embedded systems are designed to perform a specific task, in contrast to general-purpose computers that are designed to handle a wide range of tasks. They are typically optimized for efficiency and reliability, often operating in real-time environments.

Components

An embedded system typically includes:

• A microcontroller or microprocessor.
• Memory (RAM, ROM, EEPROM, etc.).
• Input/output interfaces.
• Software (firmware) that is specifically designed for the task.

Applications

Embedded systems are used in a wide range of applications, including:

• Consumer electronics (e.g., smartphones, televisions, digital cameras).
• Automotive systems (e.g., engine control units, airbag systems, infotainment systems).
• Industrial automation (e.g., programmable logic controllers, robotics).
• Medical devices (e.g., pacemakers, medical imaging systems).
• Telecommunications (e.g., routers, switches, modems).

Design Considerations

Designing an embedded system involves several considerations:

• **Real-time operation**: Many embedded systems must operate in real-time, meaning they must respond to inputs within a certain time frame.
• **Power consumption**: Especially important for battery-powered devices.
• **Reliability and stability**: Embedded systems often operate in critical environments where failure is not an option.
• **Size and weight**: Many embedded systems need to be compact and lightweight.

Development Tools

Development of embedded systems typically involves:

• Integrated development environments (IDEs).
• Compilers and debuggers.
• Emulators and simulators.
• In-circuit emulators (ICEs).

See also

• Microcontroller
• Real-time operating system
• Firmware
• System on a chip
• Internet of things
• Embedded software

Related pages

• Computer architecture
• Digital signal processor
• Field-programmable gate array
• Embedded Linux
• Embedded C