Economics can generally be broken down into: macroeconomics, which concentrates on the behavior of the aggregate economy; and microeconomics, which focuses on individual consumers. Economics is often referred to as the dismal science .. Next Up.
Bitmap (CompuServe) GIF, or Graphic Interchange Format, is a file extension for an often animated raster graphics file and is the second most common image format used on the World Wide Web after JPEG. GIF uses the LZW compression algorithm and is owned by Unisys.
GIF always uses lossless LZW compression, but it is always an indexed color file (1 to 8-bits per pixel). GIF can have a palette of 24-bit colors, but only 256 of them maximum (which colors depend on your image colors). GIF is rather limited colors for color photos, but is generally great for graphics.