history on cellphones by kevin and madison hehe

1. History of Cell Phones BY: Kevin & Madison

2. History The history of cell phones from the early days of 1920’s, a period during which radios were emerging as effective communication devices.

3. History II The very first use of radio phones were in cars, using two way radio communication. Like any other electronic equipment, cell phones evolved over time.

4. First use of Cell Phones The first official cell phone was used by the Swedish police in 1946. They made it functional by connecting a hand held phone to the central telephone network. It was very similar to the two-way radio phone that was used in cars for portable communication.

5. First used Cell Phone

6. Evolution of Modern Cells Rising from this type of communication technology, the evolution of modern cell phones began in 1947.

7. Cell Towers An engineer from Bell Labs discovered cell towers which had the ability to not only transmit but to also receive the signals in three different directions.

8. Cell Towers II Before the cell towers, cell phones only worked in two directions and through an antenna.

9. Electronic Components The electronic components used in cell phones of today’s generation were first developed in the 1960s.

10. Cell Service The problem that persisted during that time was the user was restricted to a certain block of areas, which were called cell areas.

11. Pictures

12. Pictures

13. Cellphone Facts About 22% of American teenagers (more girls than boys) own a cellphone. You can locate anyone using a cellphone.

14. Cellphone Facts II Cell phones are more popular in Europe than they in the United States with more than 60 percent of Europeans owning a cell phone; compared to about 40 percent of Americans owning a cell phone.

15. Martin Cooper Martin Cooper was born December 26, 1928. He was born in Chicago, Illinois. He was a Motorola CEO, and founder of ArrayComm

16. References www.tech-faq.com/history-of-cell-phones.html http://www.historyofcellphones.net/ Google Images http://www.cell-phone-numbers.com/cell-phone-facts.htm http://en.wikipedia.org/wiki/Martin_Cooper_(inventor)