REPORT : An Inexpensive Turtl e BUILDING AN INEXPENSIVE TURTL E by Michael Fol k Mathematics Departmen t Drake Universit y Des Moines, IA 5031 1 Two years ago two colleagues and I set about developing a microcomputer controlle d programmable robot for teaching . l The goals of our project were (1) to build a low cost (less than $75 in parts) device ( " turtle " ) which could be programmed by childre n to perform " intelligent actions " as a robot does, (2) to build a low-cost ($400 o r less) and portable " brain " for the robot so that it could easily be used in schools , and (3) to develop primitive software which would enable a user to program the robo t (more sophisticated software was to follow) . The turtle/robot system was first proposed in 1950 by Grey Walter, who built a machine which looked like a mechanical tortoise and had electronics built into i t which enabled it to "behave" remarkably like a simple animal . In 1969, many generations of tortoises after Walter's first effort, Seymour Papert of the MIT Artificia l Intelligence Lab and Wallace Fuerzeig of
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