Question

explain about VGA camera

Answer 1

Video Graphics Array (VGA) was a technology originally developed around 1987 by IBM as a means for their personal computers to display graphics on a monitor. It was replaced in the early 1990's by the more advanced Extended Graphics Array and Super Video Graphics Array standards.

VGA cameras are the oldest type of digital cameras that store their images directly inside the camera's memory or onto an attached memory card. The images can then be transferred to a computer for printing or sent to a TV screen for public viewing by connecting a cable between the camera and the second device or by removing the memory card and inserting it into a card reader.

Cameras that have the VGA designation take pictures that have a resolution of 640 X 480, which means that a picture will be 640 pixels wide by 480 pixels long. Images of that size do not take up much space, so most VGA cameras have a very small amount of internal memory. A 640 by 480 image will look distorted if printed on a full page, but will remain clear and crisp if printed as wallet sized or standard 5-inch photographs.

The VGA rating refers only to size and not to clarity. A 640 by 480 pixels is about the equivalent of a 0.3 megapixel image. The issues of distortion and clarity loss only occur when the image is either enlarged beyond it's original parameters for printing or viewed on a screen that uses a larger resolution. Since most modern monitors and TV screens use a 1280 by 1024 resolution or higher, this means that a VGA image will usually appear distorted.