Classification of embedded systems
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The document discusses different classifications of embedded systems: 1. Stand-alone embedded systems do not require a host system and perform tasks independently, such as MP3 players and temperature measurement systems. 2. Real-time embedded systems must provide outputs within certain deadlines, like autopilot systems. Hard real-time systems guarantee deadlines while soft real-time systems mostly meet deadlines. 3. Networked embedded systems are connected to networks for accessing resources, like home security systems connected over TCP/IP. 4. Mobile embedded systems are used in portable devices with limited resources, such as cell phones and digital cameras.
Classification of embedded systems
- 1. Dr. Vikas J. Dongre HOD Electronics & Telecom Government Polytechnic, Washim (MS) Email: dongrevj1@gmail.com
- 2. CLASSIFICATION OF AN EMBEDDED SYSTEM Classification Medium scale Small scale Mobile Real Time Stand alone ES Performance of Microcontroller Based on Performance and Functional Requirements Networked Sophisticated
- 3. CLASSIFICATION OF EMBEDDED SYSTEM It does not require a host system like a computer, it works by itself. It takes the input from the input ports either analog or digital and processes, calculates and converts the data and gives the resulting data through the connected device-which either controls, drives or displays the connected devices. Examples: mp3 players, digital cameras, video game consoles, microwave ovens and temperature measurement systems. Stand-alone Embedded System
- 4. It is a system which gives a required o/p in a particular time. It follow the time deadlines for completion of a task. types : a) soft and b) hard real time systems . Example: Autopilot system in a flight. Hard Real Time: System gives absolute Guarantee. Strictly adhere to each deadline. Depends on environment Soft Real Time: Statistical Guarantee. Dead line are mostly met, depend of computer. Real Time/ Reactive Embedded System CLASSIFICATION OF EMBEDDED SYSTEM
- 5. They are related to a network to access the resources. The connected network can be LAN, WAN or the internet. The connection can be any wired or wireless. It is the fastest growing area in embedded system applications. The embedded web server is a type of system wherein all embedded devices are connected to a web server and accessed and controlled by a web browser. Example: home security system wherein all sensors are connected and run on the protocol TCP/IP Embedded System Networked Embedded System CLASSIFICATION OF EMBEDDED SYSTEM
- 6. They are used in portable embedded devices like cell phones, mobiles, digital cameras, mp3 players and personal digital assistants, etc. The basic limitation of these devices is the other resources and limitation of memory. Mobile Embedded System CLASSIFICATION OF EMBEDDED SYSTEM
- 7. Small Scale Embedded System CLASSIFICATION OF EMBEDDED SYSTEM 8 bit or 16 bit microcontroller is used. designed with a single 8 or 16-bit microcontroller that may even be activated by a battery. Main programming tools are an editor, assembler, cross assembler and integrated development environment (IDE). Using ‘C’ language programs are complied into assembly and executable codes are appropriately located in to the system memory. The software has to fit into the available memory and keep in view for power dissipation while the system is running.
- 8. 16 bit or 32 bit microcontroller or microprocessor is used. Such as DSP, RISC. These types of embedded systems are designed with a single or 16 or 32 bit microcontroller, RISCs or DSPs These types of embedded systems have both hardware and software complexities. For developing embedded software for medium scale embedded systems, the main programming tools are C, C++, and JAVA, Visual C++, and RTOS, debugger, source code engineering tool, simulator and IDE. Medium Scale Embedded System CLASSIFICATION OF EMBEDDED SYSTEM
- 9. Large scale or sophisticated Embedded system They have enormous hardware and software complexities, that may need ASIPs, IPs, PLAs, scalable or configurable processors. ASIP (Application Specific Instruction Processor), ARM (Advanced RISC Machine), IP protocols are used. Encryption, Decryption, various transforms are used They are used for cutting edge applications that need hardware and software Co-design and components which have to assemble in the final system. Development tools are not readily available at reasonable cost. CLASSIFICATION OF EMBEDDED SYSTEM
- 10. ASSIGNMENT List various types of Embedded system and explain in brief
- 11. Dr. Vikas J. Dongre HOD Electronics & Telecom Government Polytechnic Washim (MS) Email: dongrevj1@gmail.com