Cellular Phones 101 Each day about 30,000 people in the United States sign up for and start using a cellular phone. Therefore it is likely that you or someone you know has a cell phone and uses it on a regular basis. They are such great gadgets - with a cell phone you can talk to almost anyone from just about anywhere, because about 80% of the U.S. has coverage (Dang). But have you ever wondered how …showed first 75 words of 1002 total…

…showed last 75 words of 1002 total…voice into digital 1s and 0s. This compression allows between 3 and 10 cell phone calls to occupy the space of a single analog voice call. PCS digital phones also offer other features like paging and email (Anonymous #1). The next time you pick up and use a cell phone - especially one of the new tiny ones that fit into your shirt pocket - keep in mind all of the technology packed into that amazing little device!