If the deadline is missed, the behavior is considered incorrect.

Sorting algorithm: sort the input and provide as output There are many sort algorithms with different average and worst-case complexity (O(n), O(nlogn), etc.) In a real-time system, the behavior must be both logically correct and produced at the correct instant of time. The response/output to a given input defines the program behavior. Stevens Institute of Technology Spring 2016, arzĮmbedded doesn’t mean small Large embedded systems such as network switches and routers don’t use microcontrollers CPU is typically in 100’s of MHz 500MB-1 GB RAM MB Flash Power consumption could be an issue They are embedded systems like their smaller counterparts in the sense that they perform a single well-defined set of tasks CPE555A – Real-Time Embedded Systems Stevens Institute of Technology Spring 2016, arzĪ computer program/algorithm has inputs and outputs. ROM or Flash to hold program Flash ~256 KB ARM Core ~ 100 MHz ~100 KB CPE555A – Real-Time Embedded Systems Stevens Institute of Technology Spring 2016, arzĩ Beaglebone Black CPE555A – Real-Time Embedded Systems Intel Pentium 3-4 GHz 3-8MB Cache ~8 GB RAM ~100 W Power Up to 1000 GB Storage CD/DVD 10/100/1000 Ethernet & WiFi CPE555A – Real-Time Embedded Systems Stevens Institute of Technology Video card Spring 2016, arzĨ Microcontroller-Based Embedded Computer There are a lot more embedded computing devices than desktops, laptops, workstations CPE555A – Real-Time Embedded Systems Stevens Institute of Technology Spring 2016, arz word processing, streaming audio, DB) CPE555A – Real-Time Embedded Systems Stevens Institute of Technology Spring 2016, arzĪn embedded computer system is a component of a larger system It is programmed to serve a single set of functions It generally interacts with the environment and performs a set of repeated control and monitoring tasks Examples include computers embedded in TV, microwave oven, medical devices, cars, network routers, etc.

Taxonomy of real-time embedded systems Example applications CPE555A – Real-Time Embedded Systems Stevens Institute of Technology Spring 2016, arzĪ general-purpose computer such as a desktop or laptop can be used for a variety of applications (e.g. Lecture 1 Ali Zaringhalam Stevens Institute of Technology Spring 2016, arzĢ Grader Qiming Zhao: – Real-Time Embedded Systems Stevens Institute of Technology Spring 2016, arz 2ģ Grade Distribution Grade Fall 2014 Spring 2015 Spring 2016 A 6 (14%)ģ (11%) 4 (14%) A- 6 (22%) 6 (20%) B+ 15 (38%) 11 (39%) 13 (42%) B 10 (24%) C 2 (5%) 2 (7%) 3 (10%) F I 1 CPE555A – Real-Time Embedded Systems Stevens Institute of Technology Spring 2016, arzĤ Outline Embedded systems Real-time-systems Presentation on theme: 'CPE555A: Real-Time Embedded Systems'- Presentation transcript: