What Cam is

An inexpensive, simple video camera that sits on top of or next to your computer monitor, it is designed to send live and recorded video as well as still pictures over the Net to one or more users. It can also be a digital camera placed somewhere, anywhere, in the world, streaming video to a Web site (or other portable device) so that users can see live footage of certain events. The "cam" suffix can be applied to many words to describe specialized cameras, such as "a nannycam," which is used inside a home to monitor a babysitter's activities.

The meaning of Vector graphics

Also called object-oriented graphics, these programs store images in the form of mathematical representations that can be resized and scaled without distortion. These "draw programs" (as opposed to paint programs) are well suited for architecture, computer-aided design, interior design, and other applications in which precision and scaling capability are more important than artistic effects. Vector graphics use computer algorithms to describe shapes, lines, animation, and so forth. The technology of vector graphics is growing in popularity because the images are scalable and smaller in file size, a plus for online viewing and downloading. Vector graphics were developed in response to the limitations of raster-based graphics (popularly known as GIF and JPG), which use pixel-by-pixel definitions and cannot be resized reliably.