)A device that controls the movement of the cursor or pointer on a display screen. A mouse is a small object you can roll along a hard, flat surface. Its name is derived from its shape, which looks a bit like a mouse, its connecting wire that one can imagine to be the mouse’s tail, and the fact that one must make it scurry along a surface. As you move the mouse, the pointer on the display screen moves in the same direction. Mice contain at least one button and sometimes as many as three, which have different functions depending on what program is running. Some newer mice also include a scroll wheelfor scrolling through long documents.
Invented by Douglas Engelbart of Stanford Research Center in 1963, and pioneered by Xerox in the 1970s, the mouse is one of the great breakthroughs in computer ergonomics because it frees the user to a large extent from using the keyboard. In particular, the mouse is important for graphical user interfaces because you can simply point to options and objects and click a mouse button. Such applications are often called point-and-click programs. The mouse is also useful for graphicsprograms that allow you to draw pictures by using the mouse like a pen, pencil, or paintbrush.
There are three basic types of mice:
mechanical:Has a rubber or metal ball on its underside that can roll in all directions. Mechanical sensors within the mouse detect the direction the ball is rolling and move the screen pointer accordingly.
optomechanical:Same as a mechanical mouse, but uses optical sensors to detect motion of the ball.
optical: Uses a laser to detect the mouse’s movement. You must move the mouse along a special mat with a grid so that the optical mechanism has a frame of reference. Optical mice have no mechanical moving parts. They respond more quickly and precisely than mechanical and optomechanical mice, but they are also more expensive.
Mice connect to PCsin one of several ways:
Serial mice connect directly to an RS-232C serial port or a PS/2 port. This is the simplest type of connection.
PS/2 miceconnect to a PS/2 port.
Cordless micearen’t physically connected at all. Instead they rely on infrared or radio waves to communicate with the computer. Cordless mice are more expensive than both serial and bus mice, but they do eliminate the cord, which can sometimes get in the way.
- Mouse Hover
A mouse hover, also called just hover, triggers an event when a user places a mouse over a designated area, such as a hyperlink on a Web page. The action of moving the mouse over the item causes events such as pop-up windows or description boxes. Hovers can be coded into Web pages using DHTML, […]
A pad over which you can move a mouse. Mousepads provide more traction than smooth surfaces such as glass and wood, so they make it easier to move a mouse accurately. For mechanical mice, mousepads are optional. Optical mice, however, require special mousepads that have grids drawn on them.
A technique that forces a user to remain on a specific Web site by not allowing the user to leave the site. Whenever the user tries to leave the site by closing the browser window or going to a new URL, the site that is mousetrapping will automatically open a new browser window with its […]
- moved to Atlanta
(slang) A reference to Web pages that disappear and leave only “404 File Not Found” errors in their place. The reference comes from the telephone area code of Atlanta, Georgia, which is 404. Web pages that produce 404 errors are said to have “moved to Atlanta.”