Agents can learn an individual s preferences and use that information to make good business decisions. For example, an agent for a purchasing manager could learn corporate specifications for a raw material. The agent can determine when inventory is low or search the Internet for the lowest cost supplier. It may even be possible to use an agent to negotiate and complete a transaction. Enables buyers within a market to select among various competitors by aggregating information about the market and its suppliers and providing this information via a Web site .
Content aggregators aggregate information and match it to user preferences.
Electronic transmission of sound or data by adding signals of varying frequency or amplitudes to carrier waves of a given frequency of alternating electromagnetic current. Analog technology has historically been used primarily for broadcast and phone transmission, although these media are moving towards digital transmission today. The telephone is a good example of how analog technology works. Telephone transmissions are completed by turning voice vibrations and into sound wave vibrations. Modems are used to convert digital information in a computer to analog signals for a telephone line and to convert analog phone signals to digital data for a computer.