GENERAL CONSIDERATIONS INVOLVED IN THE DESIGN OF FILE ORGANIZATIONS FOR INFORMATION RETRIEVAL SYSTEMS ARE DISCUSSED. THE QUESTION OF INVERTED FILE AND SERIAL FILE SEARCHING ON MAGNETIC TAPE IS REVIEWED. BASED ON FORMULAS CONCERNING INDEX TERM USAGE, IT IS SHOWN FOR A SPECIFIC COLLECTION THAT SEARCHING THE SERIAL FILE IS MORE EFFICIENT THAN…

The invention involves a device with learning capacity which contains input, storage, arithmetic and output units. In order to increase the number of recognizable patterns, facilitate replacement of one pattern by another, and also increase the speed of the device, the memory unit for the input field is connected to memory units for storage of…

Two essential components of the information-logic problem are: (1) choosing some known part of the total information block for parallel review of the entire block and (2) parallel logic processing of a sequence of codes. The described device fulfills these essential components thereby improving information processing and increasing the speed of…

The availability of low-cost minicomputers in the last few years has opened up many new control and special purpose applications for computers. However, using general purpose computers for these specialized applications often leads to inefficiencies in programing and operation. GRI Computer Corporation has developed a common-sense approach called…

Digital storage of textual portions of a library collection was reconsidered in the context of current technology and economics at a conference at the University of Pittsburgh in the Fall of 1967. The inevitable value and feasibility of textual digital storage was generally accepted. Basic data advantageous in placing in perspective the academic…

Intended to stimulate discussion rather than present solutions, this report summarizes how digital technology applies to preservation problems beyond the preservation of print materials. Specifically it describes the problems new kinds of media such as audio and videotape and computer disks pose to librarians and archivists in terms of long-term…

The PLATO IV computer-based instructional system consists of a large scale centrally located CDC 6400 computer and a large number of remote student terminals. This is a brief and general description of the proposed input/output hardware necessary to interface the student terminals with the computer's central processing unit (CPU) using available…

Descriptions of essential computer elements, logic and programing techniques, and computer applications are provided in an introductory handbook for use by educators and students. Following a brief historical perspective, the organization of a computer system is schematically illustrated, functions of components are explained in non-technical…

Written to answer the questions a teacher or administrator may have about the instructional use of computers, this book is particularly concerned with those applications of the computer in which the high school student, not a teacher or a member of the administrative staff, is "in the loop," or interacting with the computer. Acquisition…

A microeconomic theory is applied in this book to computer services and costs and for the benefit of those who are decision-makers in the selection, financing, and use of computers. Subtopics of the theory discussed include value and demand; revenue and profits; time and risk; and costs, inputs, and outputs. Application of the theory is explained…

These two texts and student workbook for a secondary/postsecondary-level correspondence course in automatic data processing comprise one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. The purpose stated for the individualized, self-paced…