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

2. Overview
Housekeeping
Global Technology

3. 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

4. Global Technology Hacker’s gift to the world:
hacker-shows-us-when-the-world-is-on-the-net/
Map of the world
What does internet activity tell you?

5. The Internet and Telephones
Same concept – “wired” together

6. Internet under the ocean too!

7. Internet Backbone
Governments build them then leases use

8. Network Access Points
Originally only four

9. Internet Exchange Points (IEP)

10. 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

11. Home and businesses Internet connections
Connections are similar

12. Wireless connects to hardwired

13. 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

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

15. 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

16. Facebook to everyone in the worlds?
uckweitz-zuckerberg- internet/index.html?iid=article_sidebar
Power is the real issue!

17. 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