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1 When the light pen is moved over the code, it triggers the chips to make sound through the loudspeaker.

2 The Light pen is made from stable carbon fiber, and has a quick-release chuck for attachment of probes.

3 Light pen Light - sensitive stylus used to edit on a VDU ( visual display unit ) .

4 The 3D vision coordinates measurement system using Light Pen is proposed on the new technique.

5 The light pen is a hand-held probe with three point light sources (LEDs) and a spherical touch stylus arranged in one line.

6 A system of a specially designed terminal and light pen. By pointing the pen to the desired character position, data of the character is selected by the system.

7 Exhibits: Highlighter, Whiteboard Marker, Permanent Marker, Light Pen, Invisible Pen, Etc.

8 A system of a specially designed terminal and light pen.

9 And when the program is ready, the student enters it simply by moving a light pen across the bar codes.

10 The key technique of the portable 3D vision coordinates measurment system using light pen was analysed.

11 Custom-made gift pen, metal pen, advertising metal pen, metal pen, pen factory customized, metal pen, pen and light pen,[www.Sentencedict.com] laser pen can be engraved text and logo.

12 Input devices include keyboards and pointing devices such as mouse, joystick , track ball, or light pen.

13 The method, which is for picking up the image coordinates of the measured feature points in the light pen vision coordinates measurement system, is proposed.

14 A light-pen single camera 3D coordinate vision measuring system is proposed in this paper. It mainly consists of a light pen, a CCD camera and a laptop computer.

15 Then introduces software design, basically have LED display scanning display, light pen orientation, function selection, etc.

16 The design scheme for display operating, the application of memory technology, the design ideas for CRT drive circuit and light pen input system have been given.