A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

R
RAM
An acronym for random access memory. It is a type of computer memory that allows any byte of memory to be accessed without touching the preceding bytes. RAM is much faster to read from and to write to than any other sort of memory. But RAM only stays there so long as the computer is running. Turn your computer off and RAM loses its data.

Resolution
Resolution is the sharpness or clarity of an image. It is often used to describe monitors, printers and bitmapped images. A screen resolution refers to the number of dots (or pixels) on the entire screen. An 800x600 screen resolution displays about 480 000 dots on a screen. The more dots per inch, the sharper the image.

Router
A dedicated computer that sends packets from one place to another on the Internet. A router is quite different from a computer as we know it. It is programmable, yes, but not for general purpose use.