A disk sector utility program (called TRAX) was designed and developed since a computer aid capable of inspecting and modifying the byte data on a disk platter, independent of any other program or system, was not commercially available. This report: (1) provides an overview of the TRAX system; (2) briefly describes the major system options; and…

A tutorial introduction to data models in general is provided, with particular emphasis on the relational and network models defined by the two proposed ANSI (American National Standards Institute) database language standards. Examples based on the network and relational models include specific syntax and semantics, while examples from the other…

Built-in data structures are the registers and memory words where binary values are stored; hard-wired algorithms are the fixed rules, embodied in electronic logic circuits, by which stored data are interpreted as instructions to be executed. Various topics related to these two basic elements of every computer program are discussed. (JN)

Discusses methods of calculating students' average grades and assigning letter grades by using dBASE II. Procedures are described for creating, recording, appending, editing, and sorting grade files; calculating total grades; using the fixed method to assign letter grades; and finding sample variances. The program for creating command files is…

Reviews attributes of laser discs and "traditional" objections to use of audiovisual materials. Use of authoring systems as means of tailoring laser disc programs and updating aging materials is described. Flexibility and power of the Video Nova Authoring System is explained and illustrated and the SONY SMC-70 microcomputer is evaluated.…

As part of a study to test the feasibility of expanding computer use within the Montana business community, computer systems were field tested in four Montana small businesses. The four businesses were a newspaper, an advertising agency, a sheep and cattle ranch, and a private investment company. The companies employed from 3 to 20 persons. Three…

Reports on tests evaluating nine microcomputer software packages designed for information storage and retrieval: BRS-Search, dtSearch, InfoBank, Micro-OPC, Q&A, STN-PFS, Strix, TINman, and ZYindex. Tables and narrative evaluations detail results related to security, hardware, user features, search capability, indexing, input, maintenance of files,…