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...
PPM
PPM stands for pages per minute and describes the number of printed pages a printer is capable of producing in one minute. Many PPM ratings on printers are higher than what the end user actually experiences because printer manufacturers rate the PPM by using the fastest draft mode on the printer with documents that contain very little printed information. It should also be noted that the PPM rating is defined when a printer is completely warmed up and ready to print. Some printer manufacturers have started listing the time it takes to print the first page after powering on the printer in addition to the standard PPM rating.
