CONNECTIVITY THE WIRELESS REVOLUTION AND THE INTERNET” Connectivity is the capability of your microcomputer to share information with other computers. Data and information can be sent over telephone lines or cable and through the air. Thus, your microcomputer can be connected to other computers, to the Internet, and to many computerized data banks and other sources of information worldwide.
The single most dramatic change in connectivity in the past five years has been the widespread use of mobile or wireless communication devices. Once used exclusively for telephone communications, these devices are now widely used to connect people and computers located almost anywhere in the world.
For just a few of these devices, see Figure 1-19. Many experts predict that these wireless applications are just the beginning of the wireless revolution, a revolution that is expected to dramatically affect the way we communicate and
use computer technology.
Connectivity and the wireless revolution are significant developments, for they expand the uses of the microcomputer severalfold. Central to the concept of connectivity is the network or computer network. A network is a communications system connecting two or more computers. Networks connect people as close as the next office and as far away as halfway around the world.
The largest network in the world is the Internet. It is like a giant highway that connects you to millions of other people and organizations located throughout the world. The Internet is a huge computer network available to nearly everyone with a microcomputer and a means to connect to it. The Web, also known as the World Wide Web or WWW, provides a multimedia interface to the numerous resources available on the Internet.
Some of the fastest-growing career opportunities are in information technology. Every chapter following this chapter includes a detailed job description for a different career in IT. These descriptions, include job titles, responsibilities, educational requirements, and salary ranges. For a list of just a few of these careers, see Figure 1-21. For a complete list and full descriptions, visit our site at http://www.itwords.org/category/jobs/
CAREERS IN IT:-
- Webmasters develop and maintain Web sites and Web resources. Webmasters also monitor and initiate steps to increase the traffic at Web sites. Salaries range from $45,000 to $70,000. See page XX for details.
- Software engineers analyze users’ needs and create application software. They have a background in programming and focus on the design and development of programs. Salaries range from $50,000 to $85,000. See page XX for details.
- Database administrators use specialized database management software to determine the most efficient ways to organize and access a company’s data. Additionally, they are responsible for maintaining database security and backing up corporate databases. Salaries range from $35,000 to $75,000. See page XX for details.
- Systems analysts address specific organization needs for information. Working with end users and other computer professionals, they follow the steps in the systems life cycle which includes preliminary investigation, analysis, design, development, implementation, and maintenance. Salaries range from $35,000 to $70,000. See page XX for details.
- Computer programmers create, test, and troubleshoot programs used by computers. Most programmers work for companies that create and sell software, but programmers may also be employed in various other businesses. Salaries range from $45,000 to Select Careers in IT $75,000. See page XX for details.