Wireless, Mobile Computing & Mobile Commerce (axel & adi)
Across
- 4. something that changes its location over time.
- 6. without wires.
- 9. virtually every object has processing power with either wireless or wired connections to a global network.
- 10. uses radio-wave frequencies to send data directly between transmitters and receivers.
- 11. in remote parts of the world it is the only option available for Internet connections because installing cables is either too expensive or physically impossible.
- 12. is red light that is not commonly visible to human eyes and common applications of infrared light are found in remote control units for televisions and DVD and CD players.
- 14. technology that allows manufacturers to attach tags with antennas and computer chips on goods and then track their movement through radio signals.
- 15. offers uninterrupted, near CD-quality transmission that is beamed to your radio, either at home or in your car, from both GEO (XM Radio) and MEO (Sirius) satellites in space.
- 17. very small purchase amounts (generally less than $10) are called micropayments.
- 18. an industry specification used to create small personal area networks.
- 19. a small, portable wireless device that provides users with a permanent Wi-Fi hotspot wherever they go with a range of about 10 meters (roughly 30 feet).
- 20. a wireless access point that provides service to a number of users within a small geographical perimeter (up to approximately 300 feet).
Down
- 1. a medium-range WLAN.
- 2. e-commerce (EC) transactions conducted with a mobile device.
- 3. a real-time, wireless connection between a mobile device and other computing environments, such as the Internet or an intranet.
- 5. networks of interconnected, battery powered, wireless sensors called motes that are placed into the physical environment.
- 7. Cellular telephones (cell phones) provide two-way radio communications over a cellular network of base stations with seamless handoffs.
- 8. a Web site with an audio interface.
- 13. portals that aggregates and provides content and services for mobile users.
- 16. the area of Earth’s surface reached by a satellite’s transmission overcomes the limitations of microwave data relay stations. The higher a satellite orbits, the larger its footprint.