CEN 4930 - Week 7: Real-Time Constraints & Watchdog

These flashcards cover key concepts related to real-time constraints, timing, and watchdog mechanisms.

WCET

Worst-Case Execution Time, the maximum time taken by a task under the worst possible conditions.

Jitter

Variability in time delay; inconsistency in the delay of message transmission.

Latency

The time taken for data to travel from source to destination.

Soft Real-Time System

A system where missing a deadline can lead to degraded performance, but no catastrophic failure.

Hard Real-Time System

A system where missing a deadline can lead to catastrophic failure.

Watchdog Timer

A timer that monitors a system to recover from stuck states.

TPS

Transaction Processing System, specifically refers to the worst-case path in a sensor to actuator loop.

Sensor-Actuator Loop

The sequence in which a sensor detects an input and an actuator performs an output based on that input.