Embedded system architecture.pptx

Embedded system architecture

1. EMBEDDED SYSTEMS Presented by:- Gayathri Altaf Ankitha Sabyasachi Ritik

2. Definition of Embedded Systems An embedded system is a microprocessor-based computer hardware system with software that is designed to perform a dedicated function, either as an independent system or as a part of a large system. At the core is an integrated circuit designed to carry out computation for real-time operations. Complexities range from a single microcontroller to a suite of processors with connected peripherals and networks; from no user interface to complex graphical user interfaces. The complexity of an embedded system varies significantly depending on the task for which it is designed. Embedded system applications range from digital watches and microwaves to hybrid vehicles and avionics. As much as 98 percent of all microprocessors manufactured are used in embedded systems. Examples:- Refrigerator, Electronic ping pong etc.

3. Elements of embedded systems An embedded system is a combination of 3 things: Hardware Software Mechanical Components And it is supposed to do one specific task only             Embedded systems are basically designed to regulate a physical variable (such Microwave Oven) or to manipulate the state of some devices by sending some signals to the actuators or devices connected to the output port system (such as temperature in Air Conditioner), in response to the input signal provided by the end users or sensors which are connected to the input ports.

4. Core of the embedded system Embedded systems are domain and application specific and are built around a central core. The core of the embedded system falls into any of the following categories: General purpose and Domain Specific Processors ·        Microprocessors ·        Microcontrollers ·        Digital Signal Processors Application Specific Integrated Circuits. (ASIC) Programmable logic devices(PLD’s) Commercial off-the-shelf components (COTs)

5. Difference between microprocessor and microcontroller Microprocessor assimilates the function of a central processing unit (CPU) on to a single integrated circuit (IC). Microprocessors are basic components of personal Computers. A Microprocessor-based system can perform numerous tasks. The clock frequency is very high usually in the order of giga Hertz Instruction throughout is given higher priority than interrupt latency. A microcontroller can be considered as a small computer that has a processor and some other components in order to make it a computer. Microcontrollers are generally used in embedded systems. A Microcontroller-based system can perform single or very few tasks. The clock frequency is less usually in the order of MegaHertz . In contrast, microcontrollers are designed to optimize interrupt latency. MICROPROCESSOR MICROCONTROLLER

6. Difference between RISC and CISC

7. Definition of Harvard architecture and           Von Neumann architecture Harvard architecture:- The Harvard architecture is a computer architecture with separate storage and signal pathways for instructions and data. It contrasts with the von Neumann architecture, where program instructions and data share the same memory and pathways. Von Neumann architecture:-  Von Neumann architecture is   the design upon which many general purpose computers are based . The key elements of von Neumann architecture are: data and instructions are both stored as binary digits. data and instructions are both stored in primary storage.

8. Harvard Architecture

9. Von Neumann Architecture

10. Difference between Harvard and Von Neumann Architectures

11. SUMMARY

12. THANK YOU