ERIC Number: ED105868
Record Type: Non-Journal
Publication Date: 1975-Apr
Reference Count: N/A
The Evolutionary Development of CAI Hardware.
Stifle, John E.
After six years of research in computer assisted instruction (CAI) using PLATO III, a decision was made at the University of Illinois to develop a larger system as a national CAI resource. This document describes the design specifications and problems in the development of PLATO IV, a system which is capable of accomodating up to 4,000 terminals throughout the United States. The design criteria included 1) the need for an average response time of .25 second or less; 2) an average key input rate per terminal of .5 key per second; 3) 10 percent of the connected terminals would be requiring output at all times; 4) a central memory requirement of 500 words per terminal; 5) a maximum student terminal cost of $5,000; 6) a student terminal that would be reliable and simple to operate at remote locations by relatively unsophisticated users; 7) the development of a system that would be manageable by a relatively small staff; and 8) a hardware system architecture that would not inhibit the development of the software which was trailing behind the hardware development. The remainder of the document briefly describes the development and operating characteristics of PLATO IV. (Author/DGC)
Publication Type: Speeches/Meeting Papers
Education Level: N/A
Authoring Institution: Illinois Univ., Urbana. Computer-Based Education Research Lab.