How PLATO changed the World…in 1960

By Cait Etherington June 03, 2017

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PLATO computer system

When most people think about eLearning, they think about developments over the past two decades. While it is true that eLearning has grown rapidly since the late 1990s and continues to represent at growth market, eLearning’s origins actually stretch back to the early days of computing. One major contribution to the early years of eLearning was PLATO–an acronym for Programmed Logic for Automatic Teaching Operations. PLATO not only changed eLearning, however, it also changed the world and how we communicate with each other on innumerable levels.

Early Computer at the University of IllinoisDespite PLATO’s major influence, however, Don Bitzer, one of the system’s two original developers, reflects upon the project in remarkably modest terms: “We were concerned about what was happening in our primary and secondary schools—large, intercity schools where close to 50% of the students were coming out functionally illiterate.” Bitzer also recognized that in order for any “teaching machine” to work, it would need to be both affordable and easy to use: “We realized that we would have to create hardware that could deliver a large variety of courseware that the students would be comfortable with. We also realized that the software would have to support the students’ learning needs and the teachers’ needs (the ability for a teacher to easily write new courseware and develop new teaching strategies) without them being computer experts.”

PLATO’s Origins

The first known experiment in eLearning was based at the University of Illinois at Urbana-Champaign. In 1959, Daniel Alpert and Don Bitzer created PLATO as part of a Computer-based Education Research Laboratory project. At the time, users could access more than 15,000 hours of lessons from a centralized one-room hub on campus. Without personal computers nor anything resembling the Internet, eLearning, in its earliest form, still required users to visit a computer lab on campus.

PLATO’s First Decade

  • 1959-1960: Early development of PLATO
  • 1961: First teaching attempt with PLATO in higher education
  • 1965: First complete college course given solely using the PLATO system
  • 1969: First remote location added to the PLATO network (at nearby Springfield High School in Springfield, Illinois)

In many respects, PLATO’s initial goals were relatively modest. In The Computer in the School, a 1975 book by Justin C. Baker, PLATO’s  goals are described as followed: “By far the most extensive computer-based system in this country, the PLATO goal is to connect 4,096 student terminals by means of telephone lines to the large central Early PLATO courseControl Data Corporation 6000 series computer system. In March of 1974, there were 450 terminals in the PLATO network.” Not surprisingly, at the time, cost was a major consideration. As Baker reports,  “A major objective of the University of Illinois project is to make computer-based education economically possible. Around 1972 an estimated cost, based on optimum use of the PLATO system with the inclusion of computer costs, communication lines, terminal equipment and the development of instructional materials, was between 50 cents and 75 cents per student per terminal hour. By the time the full 4,096 terminal network is operable, Dr. Bitzer hopes to have costs reduced below 50 cents. A cost of 10 cents per student per terminal hour in the near future is not unrealistic.”

In the end, PLATO’s modest goals were soon exceeded. By 1980, there were 7,000 hours of instructional material covering more than 150 subject areas and 7000 thousand terminals offering courses in countries around the globe, including Australia, Belgium, France, Israel, Korea, Sweden, Taiwan, the United Kingdom, Canada, and South Africa.

PLATO’s Legacy

Xerox starFrom its evidently modest beginnings, PLATO continued to grow. Over time, PLATO grew into an online learning program designed to link users in locations well beyond the Loomis Laboratory on campus. Beyond driving developments in eLearning, however, PLATO also had two other major impacts.

First, PLATO is frequently credited with driving the development of bulletin boards and chats. Second, PLATO’s technology directly informed the technologies that led to the Xerox Star, which was the first computer to feature a graphical user interface.  Of course, as legend has it, the Xerox Star later lent inspiration to Steve Jobs who would bring the Xerox Star’s technologies to Apple Inc. and well, the rest is history.

Although the PLATO experiment was abandoned just as eLearning started to gain widespread acceptance both in the education and training sectors in the early 1990s, PLATO’s influence remains ubiquitous. Indeed, as a result of a series of strategic acquisitions, several current eLearning providers, including Pearson Digital Learning, are direct descendants of PLATO. One may easily argue, however, that without PLATO, the robust learning management systems now on the market would not have taken shape.


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