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2. Turtle graphics - Wikipedia

   en.wikipedia.org/wiki/Turtle_graphics

   Turtle graphics are often associated with the Logo programming language. [2] Seymour Papert added support for turtle graphics to Logo in the late 1960s to support his version of the turtle robot, a simple robot controlled from the user's workstation that is designed to carry out the drawing functions assigned to it using a small retractable pen set into or attached to the robot's body.

3. Logo (programming language) - Wikipedia

   en.wikipedia.org/wiki/Logo_(programming_language)

   Turtle graphics were added to the Logo language by Seymour Papert in the late 1960s to support Papert's version of the turtle robot, a simple robot controlled from the user's workstation that is designed to carry out the drawing functions assigned to it using a small retractable pen set into or attached to the robot's body.

4. MSWLogo - Wikipedia

   en.wikipedia.org/wiki/MSWLogo

   Hides the turtle and aids viewing a clear drawing on the screen: ht: SHOWTURTLE: ST: Shows the turtle after it is hidden from the screen: st: PENUP: PU: Sets the turtle to move without drawing: pu: PENDOWN: PD: Resets to a drawing pen when ordered to move: pd: CLEARTEXT: CT: Clears all text in the command screen: ct: CIRCLE: Makes a circle

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   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.

6. UCBLogo - Wikipedia

   en.wikipedia.org/wiki/UCBLogo

   Animations require both the ability to draw and to erase shapes. The process is the same, except that in the former, a line is deposited on the display device and in the latter a line is removed. Using the turtle analogy, the turtle's pen must paint, and the turtle's pen must erase.

7. Non-photorealistic rendering - Wikipedia

   en.wikipedia.org/wiki/Non-photorealistic_rendering

   A normal shader (left) and an NPR shader using cel-shading (right). Non-photorealistic rendering (NPR) is an area of computer graphics that focuses on enabling a wide variety of expressive styles for digital art, in contrast to traditional computer graphics, which focuses on photorealism.

8. Turtle (robot) - Wikipedia

   en.wikipedia.org/wiki/Turtle_(robot)

   Turtle robots are commercially available and are common projects for robotics hobbyists. Turtle robots are closely associated with the work of Seymour Papert and the common use of the Logo programming language in computer education of the 1980s. Turtles specifically designed for use with Logo systems often come with pen mechanisms allowing the ...

9. Turtle Geometry - Wikipedia

   en.wikipedia.org/wiki/Turtle_Geometry

   Turtle Geometry is a college-level math text written by Hal Abelson and Andrea diSessa which aims to engage students in exploring mathematical properties visually via a simple programming language to maneuver the icon of a turtle trailing lines across a personal computer display.