The writer talks about these two sources of alternative fuel, including both their advantages and disadvantages. A 7 page paper discussing the two separate forms of signals. Each one of the signals function differently and serve separate purposes. The technological world of today is quickly moving towards a digital communications system and eliminating much of the analog products. Although analog signal systems will undoubtedly still be employed in some uses most of technology will become digital.
Television is perhaps the most obvious form of digital communications signals.
Bibliography lists 5 sources. The writer discusses George W. Bush's site as it relates to content appeal and persuasiveness. No additional sources cited.