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 PCs in 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 mice connect to a PS/2 port.
- USB mice.
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