ECE 424 Embedded Systems Design Lecture 2 Attributes

ECE 424 Embedded Systems Design Lecture 2: Attributes of Embedded Systems Now Ning Weng

ES Future Landscape We know what now, let us look forward • Technology trends • Issues, applications and initiatives • Challenges and uncertainties ─ Nontechnical but likely substantial impact on ES Prepare not Simply predict Ning Weng ECE 424 2

Technology Trends • • Computation Connectivity Storage Sensing Ning Weng ECE 424 3

Computation: Morre’s Law Ning Weng ECE 424 4

Connectivity: Bandwidth Global BW Ning Weng Wireless BW by Applications ECE 424 5

Unit for BW • • Gigabyte : GB, power of 9 Terabyte: TB, power of 12 Petabyte: PB, power of 15 Exabyte: EB: power of 18 Ning Weng ECE 424 6

Connectivity: Devices & Cost Interne of Things: 1 Trillion year 2013, most of them are embedded Internet access cost: fairly stable though BW rate increasing Ning Weng ECE 424 7

Storage • Nonvolatile memory ─ Magnetic hard disk drive • Cost per unit storage halves per 15 months • Motors: slower in orders of magnitude than electronic ─ Flash memory • CMOS tecnology • Up to 10 GV, good for embedded devices Ning Weng ECE 424 8

Issues • Energy • Security • Health Ning Weng ECE 424 9

Energy Ning Weng ECE 424 10

Security • Reasons: Information value and inexpensive to duplicate, store and transfer • Attacks: Malicious and misuse Courtesy of Trusted Computing Group Ning Weng ECE 424 11

Challenges and Uncertainties • Open systems ─ Close system slow the innovation • • Internet Access Net Neutrality Privacy Successful commercialization Ning Weng ECE 424 12

For Next Class • Get textbook • Read Chapter 13 for Qt App. framework Ning Weng ECE 424 13