Introduction to Embedded Systems

The program must be logically and temporally correct, addressing delays and timeouts.

Reactive systems address the challenges of physical concurrency in embedded system design.

Reliability and fault-tolerance are critical because embedded systems often operate in safety-critical applications where failures can lead to severe consequences.

<p>Meeting deadlines can be achieved through either using faster hardware or by employing cleverer software techniques.</p> Signup and view all the answers

<p>Minimizing power can be achieved by turning off unnecessary logic and reducing memory accesses.</p> Signup and view all the answers

<p>Goals include dependability, safety, affordability, security, scalability, and timeliness.</p> Signup and view all the answers

<p>The word size of the CPU and memory size affect the overall hardware requirements and performance capabilities of the embedded system.</p> Signup and view all the answers

<p>Functionality and user interface, manufacturing cost, and physical size are important design goals.</p> Signup and view all the answers

<p>The key phases are requirements, specifications, architecture, component design, and system integration.</p> Signup and view all the answers

<p>Functional requirements define the output based on input, while non-functional requirements include attributes like time, size, weight, power consumption, and reliability.</p> Signup and view all the answers

<p>The top-down approach starts with a high-level description and refines it to details, while the bottom-up approach focuses on building from small components to a complete system.</p> Signup and view all the answers

<p>Challenges include design time, strict deadlines, power consumption, and ensuring system reliability.</p> Signup and view all the answers

<p>Reliability ensures that the system performs consistently without failure under specified conditions.</p> Signup and view all the answers

<p>Architecture refers to the overall structure and organization of the embedded system, including hardware and software components.</p> Signup and view all the answers

<p>RTOS are crucial as they manage resource sharing and timing of tasks, ensuring timely responses to real-world events.</p> Signup and view all the answers

<p>A common example is a washing machine's control system, which automates washing cycles based on user input and sensor data.</p> Signup and view all the answers

<p>The three main components are hardware, application software, and a real-time operating system (RTOS).</p> Signup and view all the answers

<p>Hard real-time systems result in failure if deadlines are missed, while soft real-time systems only experience degraded performance when deadlines are missed.</p> Signup and view all the answers

<p>An embedded system is typically single-functioned, meaning it performs a specific operation consistently and repeatedly.</p> Signup and view all the answers

<p>An embedded system is designed to perform specific tasks rather than general-purpose computing functions.</p> Signup and view all the answers

<p>The RTOS supervises the application software, ensuring that tasks are executed in a timely manner according to system requirements.</p> Signup and view all the answers

<p>An example is a cell phone, which uses embedded systems to manage communications and applications effectively.</p> Signup and view all the answers

<p>The software in an embedded system drives the system's operations and coordinates the hardware to perform specific tasks.</p> Signup and view all the answers

<p>Reliability in an embedded system is defined by its ability to perform its specified functions correctly within a predefined timeframe.</p> Signup and view all the answers