The internal operations of this computer symbolic mathematics system are described in detail in order to explain the accomplishments of the computer. (MP)

The development of an interactive error analysis system for a highly interactive programing language compiler is explored. A project is underway at the University of Illinois to automate the teaching of elementary computer science programing language courses by utilizing the PLATO IV interactive computer system. One goal of the project is to…

After consideration of two recent examples of instruction sets for microprogramable computers, the article sketches known and new results about complete sets of functions which appear to be applicable to microlanguage development. Some needed areas of research are pointed out. Functional completeness is linked to research in control primitives for…

The report presents the underlying software architecture and rationale of the Generalized Management Information System (GMIS), along with a sample demonstration (an energy analysis problem) of its characteristics and a summary of topics of continuing research. The field-tested experimental system has the following features: It allows on-line…

The MC (microcomputer) paint brush and other parts of the MC painting medium can be used easily by the student, teacher, or artist, young or old, to produce color pictures on a TV screen and store them for later viewing or modification. The 15 colors available--two intensities of each of six colors, black, and two whites--can be painted with any…

This paper is concerned with providing automatically generated online explanations to the user of a user interface or "tool" about what the interface can and cannot do, and what parameters or options are available or required with a given command. The COUSIN interface system, developed at Carnegie-Mellon, supplies a cooperative…

The study of the dynamics of physical systems is of importance to all engineering students. LSSP, a Linear System Simulation Program, is used to study the behavior of physical phenomena and systems which may be represented to a good degree of approximation by linear models. Emphasis is placed upon the unity resulting from the mathematical…

A design for network control software for a computer network is described in which some nodes are linked by a communications satellite channel. It is assumed that the network has an ARPANET-like configuration; that is, that specialized processors at each node are responsible for message switching and network control. The purpose of the control…

This manual describes the LOGO system implemented for the PDP 11/45 at the MIT Artificial Intelligence Laboratory. The "system" includes a LOGO evaluator, a dedicated time-sharing system, and various special devices related to output such as robot turtles, tone generators, and cathode ray tube displays. (Author/SD)

This manual provides a brief description of the primitives in the computer language PDP 11 LOGO. It is intended to provide a quick reference for users who are familiar with the basics of the LOGO language. (Author/SD)

This manual provides brief descriptions of the primitives and is the PDP11 implementation of the LOGO language. It is intended as a quick reference for users familiar with the LOGO language. (SD)

Because previous research by Bayman and Mayer (1983) suggests that individuals who attempt to learn their first computer language develop a variety of misconceptions of the meanings of individual programming statements, this study investigated whether it is possible to enhance beginning programmers' understanding of the programming statements…

In context of an instrumentation course, four ocean engineering students set out to design and construct a micro-computer based data acquisition system that would be compatible with the University's CYBER host computer. The project included hardware design in the area of sampling, analog-to-digital conversion and timing coordination. It also…

Although the indispensibility of access control mechanisms in data secure systems has been recognized, there is a need for more subtle protection and refined control mechanisms. This report describes context protection mechanisms which enable the same data unit to be protected differently in different contexts, the differences being determined by…

In an attempt to overcome the lack of natural means of communication between student and computer, this thesis addresses the problem of developing a system which can understand natural language within an educational problem-solving environment. The nature of the environment imposes efficiency, habitability, self-teachability, and awareness of…