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1080i

Definition:

The "1080" part of 1080i 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 1080 indicates that the video display is constructed using an interlaced method.

Some television stations broadcast their high definition signals in a 1080i format.

Here's a word you may not know...

kilobyte

A kilobyte describes how much information can be stored on a device. Although the actual numbers are slightly higher, it is easiest to think of 1 kilobyte as 1,000 bytes.

For reference, a small Microsoft Word document typically takes about 25 kilobytes (25 KB) of storage space.