Lecture 2 – Global Technology Anthony Chow, Ph.D. August 27, 2013

Overview Housekeeping Global Technology

Housekeeping Scan posted articles for this week Discussion this week A lot of reading but you do not have to read that closely Scan for major points Want to give you overview of major trends Discussion this week Post your take on technology in libraries and/or education Facebook Twitter Participate (optional) with other comments Observe Course discussion posts: Write about your experience, reaction to readings, etc. React to a classmate’s post

Global Technology Hacker’s gift to the world: http://www.euronews.com/2013/03/27/cheeky- hacker-shows-us-when-the-world-is-on-the-net/ Map of the world What does internet activity tell you?

The Internet and Telephones Same concept – “wired” together

Internet under the ocean too!

Internet Backbone Governments build them then leases use

Network Access Points Originally only four

Internet Exchange Points (IEP)

The bigger, longer the line, the more speed. Category Wire Pairs Speed CAT 1 1 1 MHz CAT 2 4 4 MHz CAT 3 16 MHz CAT 4 20 MHz CAT 5 100 MHz CAT 5e CAT 6 250 MHz CAT 6a 500 MHz CAT F 600 MHz CAT Fa 1.2 GHz Fiber Optics Uses light vs. electricity Much faster than cable (1.5 Mb/s vs. 2.5 Gb/s 99% of computers are installed with Ethernet cards vs. more expensive fiber cards Used for the backbone

Home and businesses Internet connections Connections are similar

Wireless connects to hardwired

Wireless speeds 802.11b offered up to 11 megabits per second (Mbps) 802.11a and 802.11g offer up to 54 Mbps 802.11n offers up to 300 Mbps Usual speeds are 50% of capacity

Cellular Connectivity 3G (3.5 MB/s), 4G (5.5 MB/s), and now 5G (1 GB/s?)

Forbes 5 Tech Trends 1. No-Touch Interfaces 2. Native Content 3. Massively Online 4. The Web of Things 5. Consumer Driven Supercomputing Computing will be ubiquitious

Facebook to everyone in the worlds? http://www.cnn.com/2013/08/24/opinion/b uckweitz-zuckerberg- internet/index.html?iid=article_sidebar Power is the real issue!

Group Discussion What is technology doing to the world, your lives? Pro’s Con’s What does the Internet activity map tell you? Let’s discuss