Embedded System

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Information about Embedded System

Published on January 12, 2011

Author: pl_arun



Slide 1: Electrical Engineering Department. Presentation By Priyanka A. Phopale Deepali R.Babar Guided By Mr.Vyas S.N. Paper Presentation on “ EMBEDDED SYSTEM ” Shri Siddheshwar Women’s Polytechnic, Solapur . Shri Siddheshwar Devasthan Trust’s CONTENT: CONTENT INTRODUCTION TO EMBEDDED SYSTEM HISTORY CATEGORIES OF EMBEDDED SYSTEM OVERVIEW OF EMBEDDED SYSTEM ARCHITECTURE CHARACTERISTICS SPECIALITIES OF EMBEDDED SYSTEMS RECENT TRENDS IN EMBEDDED SYSTEMS APPLICATION AREAS CONCLUSION REFERENCES INTRODUCTION TO EMBEDDED SYSTEM: INTRODUCTION TO EMBEDDED SYSTEM What is an Embedded System An embedded system is some combination of computer hardware & software, either fixed in capability or programmable, that is specifically designed for a particular kind of application device Embedded System Design : H/W +S/W » Application Software » OS (porting or design) » Device Driver » Hardware (target platform) HISTORY: HISTORY One of the first recognizably modern embedded systems was the Apollo Guidance Computer, developed by Charles Stark Draper at the MIT Instrumentation Laboratory An early mass-produced embedded system was the Autonetics D-17 guidance computer for the Minuteman missile, released in 1961 Since these early applications in the 1960s, embedded systems have come down in price and there has been a dramatic rise in processing power and functionality. The first microprocessor for example, the Intel 4004, was designed for calculators and other small systems but still required many external memory and support chips. In 1978 National Engineering Manufacturers Association released a "standard" for programmable microcontrollers, including almost any computer-based controllers, such as single board computers, numerical, and event-based controllers. CATEGORIES OF EMBEDDED SYSTEM : CATEGORIES OF EMBEDDED SYSTEM Stand-alone Embedded Systems Real-time Systems Network Information Appliances OVERVIEW OF EMBEDDED SYSTEM ARCHITECTURE : OVERVIEW OF EMBEDDED SYSTEM ARCHITECTURE BUILDING BLOCK OF HARDWARE OF AN EMBEDDED SYSTEM : BUILDING BLOCK OF HARDWARE OF AN EMBEDDED SYSTEM Central Processing Unit (CPU) Memory Input devices Output devices SOFTWARE IN EMBEDDED SYSTEM: SOFTWARE IN EMBEDDED SYSTEM Software : Device driver + OS + Application program Device driver Digital IO (GPIO-LED, Relay, Switch,…) , ADC, DAC, U(S)ART, Timer/counter, WDT, I2C, SPI, PWM, Actuator, Sensor, Touch screen, IRDA, Network (Ethernet, X.25, Wireless...), USB, IEEE1394 ( Firewire ), Audio, Video Graphic, LCD, Keyboard, Mouse, DMAC, Bluetooth OS or non-OS OS roles and missions → Process Management : Task scheduling, Context switching → Resource Management : CPU, MMU, Disk, I/O devices → File System : FAT, NTFS, EXT2/3, JFS, NFS → Device Driver : I/O, Network → GUI, Security, ... Embedded system OS →Multi-tasking, Network, Multimedia, Portable, Preemptive, Deterministic (Hard Real-time), Robust & Reliable CHARACTERISTICS: CHARACTERISTICS Embedded systems are designed to do some specific task, rather than be a general-purpose computer for multiple tasks. Some also have real-time performance constraints that must be met, for reasons such as safety and usability; others may have low or no performance requirements, allowing the system hardware to be simplified to reduce costs. User interface Processors in embedded systems Ready made computer boards Peripherals Tools Debugging Reliability User interface SPECIALITIES OF EMBEDDED SYSTEMS : SPECIALITIES OF EMBEDDED SYSTEMS Performance Power Consumption Cost Size Software Up gradation capability RECENT TRENDS IN EMBEDDED SYSTEMS : RECENT TRENDS IN EMBEDDED SYSTEMS Processor Power Mobile Devices Operating Systems Communication Interfaces and Networking Capability Programming Languages APPLICATION AREAS: Automative Ignition System Engine Control Brake System Medical Infusion Pumps Dialysis Machine Prosthetic Device Cardiac Monitor Networking Router Hubs Gateways Consumer Electronic TV Set-Top Box PDA Kitchen Application Toys/Games Telephone/Cell Phones Camera/GPS Industrial Contol Robotics Control System Art.Satellies Missiles Nuclear Reactors Space Stations Shuttles Office Automation Fax Copier Printers Scanners Card Readers Monitors APPLICATION AREAS CONCLUSION : CONCLUSION Thus embedded systems contain programmed instruction running via processor chips. They perform control, protection & monitoring tasks. In broad terms embedded systems are programmable devices or systems which are generally used to control or monitor things like processes machinery, environmental equipment & communications. Slide 14: REFERENCES Embedded Systems Architecture, Designing and Programming – By Rajkamal. Embedded Systems Programming and Designing – By Michael Barr. Designing Of Embedded Hardware – By John Keysoukisi. Embedded System Design – By Frank Vahid. Slide 15: Thank You very much….. Create Knowledge Structure Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Seminar - Knowledge Sharing And Acquiring Environment Apply Knowledge Assimilate Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Structure Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Create Knowledge Structure Knowledge Disseminate Knowledge Apply Knowledge Assimilate Knowledge Slide 16: Thank You “Things that think… don’t make sense unless they link.”

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