6/11/20161Preetha V. AP/EEE SNS College of Engineering.

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Presentation transcript:

6/11/20161Preetha V. AP/EEE SNS College of Engineering

INTRODUCTION TO EMBEDDED SYSTEMS 6/11/20162Preetha V. AP/EEE SNS College of Engineering

Analogy 6/11/20163Preetha V. AP/EEE SNS College of Engineering

6/11/20164Preetha V. AP/EEE SNS College of Engineering

Brain Storming TV stereo remote control phone / mobile phone refrigerator microwave washing machine electric tooth brush oven / rice or bread cooker watch alarm clock electronic musical instruments electronic toys (stuffed animals,handheld toys, pinballs, etc.) medical home equipment (e.g. blood pressure, thermometer) 6/11/20165Preetha V. AP/EEE SNS College of Engineering

Application Areas Automobiles –engine management, trip computer, cruise control, immobilizer, car alarm, –airbag, ABS, ESP, … Building Systems –elevator, heater, air conditioning, lighting, key card entries, locks, alarm systems, … Agriculture –feeding systems, milking systems, … Space –satellite systems, … 6/11/20166Preetha V. AP/EEE SNS College of Engineering

6/11/20167Preetha V. AP/EEE SNS College of Engineering odometers

6/11/20168Preetha V. AP/EEE SNS College of Engineering

Embedded Systems 6/11/20169Preetha V. AP/EEE SNS College of Engineering

What is an Embedded system? An embedded system is one that has computer hardware with software embedded in it as one of its components. Or We can define an embedded system as “A microprocessor based system that does not look like a computer”. Or we can say that it is “A combination of computer hardware and software, and perhaps additional mechanical or other parts, designed to perform a dedicated function”. 6/11/201610Preetha V. AP/EEE SNS College of Engineering

Layered architecture of an Embedded System 6/11/201611Preetha V. AP/EEE SNS College of Engineering

This slide shows the Hardware architecture of an embedded system 6/11/201612Preetha V. AP/EEE SNS College of Engineering

Puzzle Time I AM A SOFTYWARE PROGRAM THAT ALLOWS UR PC TO COMMUNICATE, WHO AM i? 6/11/201613Preetha V. AP/EEE SNS College of Engineering Major component in a System Control and execution

Classification of Embedded Systems Based on functionality and performance requirements, embedded systems are classified as : Stand-alone Embedded Systems Real-time Embedded Systems Networked Information Appliances Mobile Devices 6/11/201614Preetha V. AP/EEE SNS College of Engineering

Real-time Systems  Embedded systems in which some specific work has to be done in a specific time period are called real-time systems. Hard Real time Firm Real time Soft Real time 6/11/201615Preetha V. AP/EEE SNS College of Engineering

Real-time system concepts Real-time system is the one in which logical correctness is based on both the correctness of the output as well as their timeliness. A soft real-time system is one in which performance is degraded by failure to meet response-time constraints. A hard real-time system is one in which failure to meet a single deadline may lead to complete and catastrophic failure. More examples: ◦ Automatic teller: soft ◦ Robot vacuum cleaner: firm ◦ Missile delivery system: hard 6/11/201616Preetha V. AP/EEE SNS College of Engineering

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