engineering

Turtle (robot)

Turtle (robot) is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Turtle (robot) rather than just read about it. In short: Turtles are a class of educational robots designed originally in the late 1940s (largely under the auspices of researcher William Grey Walter) and used in computer science and mechanical engineering training. These devices are traditionally built low to the ground with a roughly hemispheric (sometimes transparent) shell and a power train capable of a very small turning radius.

Key takeaways

Turtle (robot) belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Turtle (robot) to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Turtle (robot) from memory before moving on to harder problems.

Reference excerpt

Turtles are a class of educational robots designed originally in the late 1940s (largely under the auspices of researcher William Grey Walter) and used in computer science and mechanical engineering training. These devices are traditionally built low to the ground with a roughly hemispheric (sometimes transparent) shell and a power train capable of a very small turning radius. The robots are often equipped with sensor devices that aid in avoiding obstacles and, if the robot is sufficiently sophisticated, allow it some perception of its environment. 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 programmer to create a design on a large sheet of paper. The original Logo turtle, built by Paul Wexelblat at BBN, was named "Irving" and was demonstrated at the former Muzzey Junior High in Lexington, Massachusetts. "Irving" contained bump sensors and could give audio feedback with a bell. The development of the robotic Logo turtle led to the use of the term to describe the cursor in video screen implementations of the language and its turtle graphics package.

See also BEAM robotics, the branch of robotics pioneered in part by William Grey Walter, specializing in autonomous devices using simple analog control systems iRobot Create and its predecessor Roomba, turtle-like robots originally designed for domestic use Player Project, a free robotics suite Curses (computer game), an interactive fiction game by Graham Nelson that includes a voice-operated turtle in one of its more difficult puzzles Unicycle cart, for a mathematical model of the dynamics of a turtle robot

References

External links The Story of Turtle Robots in Pictures. Articles about Turtle and Roamer robots. Photo gallery of Walter's original turtles and a Lego-based replica Pictures and information about early UK analog turtle designs from the Bristol Robotics Laboratory A Logo Primer or Whats with the Turtles Logo Foundation.

Illustrations

Worked examples

Example 1 — a first encounter with Turtle (robot)

Start with the simplest possible case. Write down what Turtle (robot) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Turtle (robot) before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Turtle (robot) ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Turtle (robot)

In research: Turtle (robot) appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Turtle (robot) in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Turtle (robot) is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1940s robots, Educational robots, Historical robots, so understanding it makes those chapters shorter.
In everyday life: Look for Turtle (robot) outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Turtle (robot) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Turtle (robot) means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Turtle (robot) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Turtle (robot) in simple terms?

Why does Turtle (robot) matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Turtle (robot)?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Turtle (robot).