What Is a Light Pen?
Also called photoelectric pen, a device that reads special forms of data, such as bar code records, into a computer system by using light and photoelectric tubes. Its appearance is similar to a pen, so it is commonly called a light pen. [1]
- Light pen
- Light pens work in two ways: pointing and tracking. [2]
- Generally, light pens serve three purposes:
- Use the light pen to complete a variety of complex functions such as drawing, changing pictures, rotating graphics, and zooming in and out, which is very useful in engineering design;
- Make "menu" selection to form a human-computer interaction interface;
- Auxiliary editing programs to achieve editing functions. Light pens are important input devices in systems such as computer-aided publishing. (With fiber optic connector
- Light pen