Embedded Systems Topic 1: History Overview
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Questions and Answers

What term did Mark Weiser coin to describe the integration of computers into everyday products?

  • Invisible Computer (correct)
  • Ambient Intelligence
  • Pervasive Computing
  • Ubiquitous Computing

    • What does 'pervasive computing' primarily focus on?

  • Providing information anytime and anywhere
  • The practical application of existing technology (correct)
  • Creating intelligent communication networks
  • The integration of technology in physical environments

    • Which of the following best describes an embedded system?

  • A generic computing device with broad capabilities
  • A traditional mainframe computer
  • An electronic system designed for a specific function (correct)
  • A standalone personal computer

    • What significant change in computing occurred until the late 1980s?

    <p>Mainframe computers dominated information processing</p> Signup and view all the answers

    Which term emphasizes communication technology in smart homes and buildings?

    <p>Ambient Intelligence</p> Signup and view all the answers

    What was one of Mark Weiser's predictions for the future of computing?

    <p>Computers will be integrated into daily life to become unnoticeable.</p> Signup and view all the answers

    Which of the following is a characteristic of embedded systems?

    <p>They combine hardware and software for specific functions.</p> Signup and view all the answers

    Why is miniaturization significant in the development of embedded systems?

    <p>It enables the integration of computing in diverse environments.</p> Signup and view all the answers

    What type of embedded system is characterized by the use of complex instruction sets and is often seen in robotics and industrial process control?

    <p>Third Generation</p> Signup and view all the answers

    Which generation of embedded systems is primarily built around 8-bit microprocessors and is typically simpler in functionality?

    <p>First Generation</p> Signup and view all the answers

    Which of the following embedded system classifications focuses on the performance and complexity of the intended application?

    <p>Classification based on Performance Requirements</p> Signup and view all the answers

    What does the acronym DSKY stand for in the context of embedded systems?

    <p>Display/Keyboard</p> Signup and view all the answers

    What was the first mass-produced embedded system, primarily used in missile guidance?

    <p>Autonetics D-17</p> Signup and view all the answers

    Which type of embedded system would utilize multicore processors and offer tight integration and high performance?

    <p>Large Scale/Complex</p> Signup and view all the answers

    Which generation of embedded systems commonly leverages System on Chips (SoCs) for high performance and integration?

    <p>Fourth Generation</p> Signup and view all the answers

    In the classification of embedded systems based on complexity, which scale is associated with low performance 8 or 16-bit microcontrollers?

    <p>Small Scale</p> Signup and view all the answers

    What distinguishes embedded systems from general purpose computing systems?

    <p>Embedded systems are designed for executing a specific set of applications.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of embedded systems?

    <p>They can be programmed by the end user.</p> Signup and view all the answers

    What is primarily considered when selecting an embedded system?

    <p>The performance and power requirements.</p> Signup and view all the answers

    Which of the following statements about general purpose computing systems is accurate?

    <p>They allow the end user to modify operating systems and applications.</p> Signup and view all the answers

    What does it mean for embedded systems to be highly tailored?

    <p>They optimize resources like power and memory usage according to specific needs.</p> Signup and view all the answers

    What was the first recognized modern embedded system?

    <p>Apollo Guidance Computer</p> Signup and view all the answers

    Which feature is largely NOT associated with embedded systems?

    <p>Highly variable operating conditions.</p> Signup and view all the answers

    End users of embedded systems typically cannot do which of the following?

    <p>Alter the installed firmware.</p> Signup and view all the answers

    What characterizes soft real-time systems?

    <p>Missing a deadline may be tolerated to a certain degree.</p> Signup and view all the answers

    Which embedded system classification relies on a predictable schedule?

    <p>Time Triggered Systems</p> Signup and view all the answers

    What is a characteristic of hard real-time systems?

    <p>Missing a deadline can have catastrophic consequences.</p> Signup and view all the answers

    In automotive electronics, which of the following is considered critical?

    <p>Anti-braking systems (ABS)</p> Signup and view all the answers

    What type of systems primarily depend on events that trigger processes?

    <p>Event Triggered Systems</p> Signup and view all the answers

    Which application area benefits significantly from embedded systems by reducing emissions?

    <p>Railways</p> Signup and view all the answers

    Which of the following is NOT a feature of an embedded system?

    <p>General-purpose computing</p> Signup and view all the answers

    What is the role of RTOS in embedded systems?

    <p>It schedules, prioritizes, and manages tasks.</p> Signup and view all the answers

    What is the primary focus of robotics in the context of embedded systems?

    <p>Mechanical aspects</p> Signup and view all the answers

    Which of the following is NOT a purpose of embedded systems?

    <p>Emotion Recognition</p> Signup and view all the answers

    Which of the following types of data can embedded systems collect?

    <p>Both analog and digital data</p> Signup and view all the answers

    What type of interface can be used for data communication in embedded systems?

    <p>Both wired and wireless interfaces</p> Signup and view all the answers

    Which of the following is an example of a dedicated data transmission embedded system?

    <p>Network Hubs</p> Signup and view all the answers

    What task is performed by embedded systems related to data representation?

    <p>Acquisition and meaningful representation of data</p> Signup and view all the answers

    What was one of the first applications of computers in the military?

    <p>Military radar signal analysis</p> Signup and view all the answers

    Which of the following tasks does not relate to embedded systems?

    <p>Gaming development</p> Signup and view all the answers

    Study Notes

    History and Overview of Embedded Systems

    • Before the late 1980s, information processing relied on large mainframe computers and tape drives.
    • Miniaturization led to personal computers becoming prevalent for office applications and environmental control.
    • Mark Weiser introduced "ubiquitous computing," envisioning computing available anytime and anywhere.
    • "Invisible computer" reflects the goal of integrating computers into products for seamless use.
    • Related concepts:
      • Pervasive Computing emphasizes practical applications using existing tech.
      • Ambient Intelligence focuses on communication tech in smart environments.
    • Embedded systems merge information processing with physical environments, characterized by their unique functions designed through hardware and firmware.

    Definition and Characteristics of Embedded Systems

    • Embedded systems are electronic or electromechanical systems designed for specific functions.
    • Examples include electronic toys, mobile phones, washing machines, and automotive controls.
    • Distinctive features:
      • Specialized hardware and software.
      • Pre-programmed firmware, non-alterable by end users.

    Comparison: General Computing Systems vs. Embedded Systems

    • General Computing Systems:

      • Utilize generic hardware and OS for various applications.
      • Applications can be modified by users.
      • Performance is critical (faster is often better).

    • Embedded Systems:

      • Comprise specialized hardware with embedded OS for specific tasks.
      • Usually designed to optimize power usage and efficiency.
      • Prioritize application-specific requirements, including deterministic performance.

    Historical Milestones in Embedded Systems

    • First recognized modern embedded system: Apollo Guidance Computer (AGC), developed for NASA's Apollo missions, featuring:

      • Command Module and Lunar Excursion Module.
      • RAM and ROM sizes ranged from 256 words to 36K words.
      • Clock frequency: 1.024 MHz.

    • First mass-produced embedded system: Autonetics D-17 Guidance Computer for Minuteman-I missile.

    Classification of Embedded Systems

    • By Generation:

      • First Generation: Early systems using 8-bit microprocessors (e.g., 8085).
      • Second Generation: 16-bit microprocessors, common in SCADA systems.
      • Third Generation: High-performance 16/32-bit microprocessors, used in robotics and industrial control.
      • Fourth Generation: Utilizes SoCs and multicore processors, found in smartphones and multifunction devices.

    • By Complexity & Performance:

      • Small Scale: Low-performance systems, possibly without OS.
      • Medium Scale: Medium-performance with potential GPOS/RTOS.
      • Large Scale/Complex: High-performance systems needing complex hardware/software, often with RTOS.

    • By Deterministic Behavior:

      • Soft Real-Time: Deadlines are flexible and tolerable.
      • Hard Real-Time: Missing deadlines results in critical failures.

    • By Triggering:

      • Event Triggered: Dependent on real-time events.
      • Time Triggered: Operates on predetermined schedules.

    Application Areas of Embedded Systems

    • Automotive Electronics: Crucial for engine control, safety features (ABS, airbags), GPS, etc.; enhances environmental safety.
    • Avionics: Vital for flight systems, anti-collision measures, reduces emissions from aircraft.
    • Railways: Similar technology used as in cars and planes to ensure safety and efficiency.
    • Robotics: Focuses on mechanical design and high-functioning systems, including bio-inspired robots.
    • Military: Information processing for equipment and radar systems is integral to military operations.

    Purpose of Embedded Systems

    • Embedded systems are designed for various tasks, including:
      • Data Collection/Storage/Representation: Acquiring and managing data for storage or analysis.
      • Data Communication: Facilitating data transfer using wired (Ethernet, USB) or wireless (Wi-Fi, Bluetooth) technologies.
      • Data Processing: performing computations or manipulations on collected data.
      • Monitoring: Overseeing system performance or environmental conditions.
      • Control: Managing system operations to achieve desired outcomes.
      • Application-Specific User Interface: Custom interfaces for targeted user interactions.

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    Description

    This quiz covers the history and overview of embedded systems, detailing the transition from large mainframe computers to personal computers and their evolution over time. Discover how miniaturization and technological advancements have shaped the development of embedded systems in various applications.

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