480i
Definition:
The "480" part of 480i describes the number of vertical lines that make up a television or video signal. Most television or video signals are rated at 480, 720 or 1080. The more vertical lines that make up the picture, the crisper or higher definition the picture. The "i" following 480 indicates that the video display is constructed using an interlaced method.
The typical format for standard definition television programming is 480i.
Here's a word you may not know...
email
An email is an electronic message sent from one person to another person, or group of people, usually transmitted over the Internet. Initially, the majority of email was transmitted from one computer to another but today email can be transmitted to and from several electronic devices, including smart phones. Email is very popular due to its near immediately delivery and the zero cost associated with sending or receiving email.
