graphic input device的意思|示意

Graphic input devices are computer devices used to input and manipulate data in graphical form. They allow users to create and/or manipulate visual images on the screen such as icons, windows, menus, and other graphics. In most cases, graphic input devices are used to control a computer’s graphical user interface (GUI).

The most commonly used graphic input devices are the mouse and the trackball. A mouse is a pointing device used to control the cursor on the screen and allows the user to select objects and perform other functions. A trackball is essentially a mouse in reverse, allowing the user to spin the ball with their fingers to move the cursor on the screen.

The use of a graphic input device also allows the user to control objects in two-dimensional or three-dimensional space such as in a CAD application or a 3D game. This type of manipulation is known as “free-form drawing” or “3D modeling”. A typical example of this is the use of a 3D pen, which is used to create digital sculpture designs.

Graphic input devices can also be used to create digital artwork such as drawings, paintings, photographs, and animations. The user can draw with a stylus and tablet or use a pressure-sensitive drawing tool to create these digital works.

Graphic input devices are not just limited to creating digital artwork. They can also be used to control industrial machinery, medical imaging machines, and other complex computer systems. A joystick, for example, is a popular graphic input device used to control aircraft and other vehicles in flight simulators.

In conclusion, graphic input devices are versatile tools and can be used for a wide variety of applications. They are essential for creating digital artwork, controlling industrial machinery, and manipulating objects in two-dimensional or three-dimensional space.