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Other input devices which will not be further reviewed within this report
include the following:
- A dial is an input device with only one rotational DOF which is
mainly used in CAD applications to control the view of a model or a
scene. Usually, several dials are used to control more DOFs.
- Paddles and Sliders do also have only one DOF, but
in this case it is a translational one. They are very cheap and are
mainly used in the entertainment industry.
- The trackball's functionality is comparable with those of
the mouse (see section 3.2.2 ). They are mostly used in portable
computers (laptops and notebooks) in order to save the space that is
needed to move a mouse.
- Joysticks are mainly used in the entertainment
industry. They are used to control cursor movements in 2D and are
equipped with one or more buttons.
- Digitizers are 2D input devices for exact inputs of
points, usually from already existing sketches. Their main purpose is to
digitize hand-drawings, i.e. to get 2D scenes in a format which can be
processed by a CAD program.
- Eyetracker are controlled by the movement of the user's
eyes which are sensed with infrared light. It is possible for the user to
control the cursor by simply looking in the desired direction.
- Both devices may be operated by a pen or by the
user's fingertips. With the touchscreen, the user can directly point to
objects on the screen. Both devices are mainly used for simple pointing
and selection tasks.
Esprit Project 8579/MIAMI (Schomaker et al., '95)
Thu May 18 16:00:17 MET DST 1995