1. Revolutionization of Computers and Wireless Technology By: Vincent Mays

2. The Wireless Revolution  Most dramatic change in connectivity comm in the past 5 years has been mobile and wireless phones  Est. over 600 million mobile phones are in use worldwide  Allows us to stay together at anytime and any place  Most dramatic change in connectivity comm in the past 5 years has been mobile and wireless phones  Est. over 600 million mobile phones are in use worldwide  Allows us to stay together at anytime and any place

3. Communication Systems Electronic systems that transmit data from one location to another Whether wired or wireless every communication system has 4 basic elements

4. Four Basic Elements  1) Sending and receiving devices  2)Connective devices  3)Communication Channel  4)Data transmission

5. Physical Connections »Telephone Lines »Coaxial Cable »Fiber Optic »- 26,000 times the transmission capacity of twisted pair »- compared to coaxial its faster lighter and more reliable when it comes to transmitting data

6. Wireless Connections Satellite are used to send and receive large data Uplinks are you to send data Downlinks are you to receive data

7. Modems Short for modulator-demodulator Modulator- process from converting digital to analog Demodulator- process from converting analog to digital

8. Type of Connections Dial up service- standard telephone lines and conventional modems Cable Modems- use existing tv cables to provide high speed connections

9. Protocols  Identification- it’s a numeric address  Reformatting- info sent or transmitted across the internet usually travels through numerous interconnected networks

10. Configurations Topology- network arranged or configured in several different ways Ring Network- each device is connected to two other devices forming a ring

11. Strategy Terminal Network System Client Server Network System

12. Organizational Internets  Intranet- private network within an organization that resembles the internet  Extranets- private network that connects more than one organization  Firewalls- security system designed to protect an organization network against external threats  Intranet- private network within an organization that resembles the internet  Extranets- private network that connects more than one organization  Firewalls- security system designed to protect an organization network against external threats

13. Terms eClient- a node that requests and uses resources available from other nodes eServer- a node that shares resources with other nodes eHost Computer- a large centralized computer, usually a minicomputer or a mainframe