This class is an introduction to electronic mail and its useful features. The most popular services of the Internet are the world wide web, chat and e-mail. E-Mail is transmitted across the Internet via a system called packet switching, which was developed in the 1960's. A system software divides the message into packets. Jill's e-mail address into a numeric address.
Routers send message to a destination server.
Destination server puts the packets into order. Jill's e-mail client software displays the message. What's even greater about packet switching is that you don't have to understand it in order to appreciate the Internet or to send e-mail. Often it is part of the user's real name, but it can be numbers, dashes or letters. The username must be unique to organization.