Apple Computer Inc. The Macintosh was one of the first computers to use a graphical user interface. Today, Apple continues to produce many different models of Macintosh, which are used mainly for desktop publishing and multimedia production. A mouse is a small device that a computer user pushes across a desk surface in order to point to a place on a display screen and to select one or more actions to take from that position. Modem A modem modulates outgoing digital signals from a computer or other digital device to analog signals for a conventional copper twisted-pair telephone line and demodulates the incoming analog signal and converts it to a digital signal for the digital device. In information technology, a network is a series of points or nodes interconnected by communication paths.
Networks can interconnect with other networks and contain sub-networks.
The distinction is both technical and cultural. The display on a monitor is made up of a collection of dots called pixels. For monochrome screens, a pixel contains one dot. By varying the intensity of the dots, you can display up to 256 shades of gray or millions of colors. Pixel stands for picture element.