Reviews computer storage devices designed to provide additional memory for microcomputers--chips, floppy disks, hard disks, optical disks--and describes how secondary storage is used (file transfer, formatting, ingredients of incompatibility); disk/controller/software triplet; magnetic tape backup; storage volatility; disk emulator; and…

Describes three commercial, numeric databases that are available in microcomputer diskette format: Micro/Scan Disclosure; Wharton Econometric Forecasting Associates World Economic Service; and Trinet's Survey of Commercial Buying Power. Advantages and disadvantages of the diskette format, search strategies, and a selected list of eight suppliers…

Analyzes computer terminal memory performance in terms of overflow probability and average queueing delay, and presents new method to derive a closed expression for data arrivals with Erlangly distributed interarrival times and an approach to derive steady state probability expressions of the terminal memory content process. Twenty references are…

Presents responses to some commonly-asked questions about the development of "Computer Cat," a microcomputer-based online catalog system in a Colorado elementary school learning resources center. Computer knowledge required to implement such a system, hardware selection, hardware requirements, student use of the system, and educational…

Presents a system model for transmission of input data that is coming from terminals of users in a limited user resource-sharing environment. Performance of a mini/microcomputer receiving mixture of picture-phone terminal data is analyzed with constant service times, synchronous transmission, and single-server interruptions through first-order…

This article defines three separate categories of microcomputers--personal, desk-top, multi-user devices--and relates storage capabilities (expandability, floppy disks) to library applications. Highlghts include de facto standards, operating systems, database management systems, applications software, circulation control systems, dumb and…

InfoTrac is a laserdisc system that provides local computer-access to Information Access Company's periodical databases and offers libraries an extensive, self-contained reference system. The system, which employs an IBM PC microcomputer, a Hewlett-Packard Thinkjet printer, and a Pioneer videodisc player, provides advantages of online searching at…

This third article in a five-part series focuses on personal computer software (instructional packages for the computer itself). Topics covered include 11 categories of microcomputer software, evaluation and selection, purchase, version numbers and upgrades, copy protection, disk operating system commands, preparation of master disk, batch files,…

This paper proposes solutions to technical, copyright, and financial problems of downloading (storage in machine-readable form at user's site as result of searches in machine-readable file held on vendor's computer). Challenges of downloading--establishing ground rules, new pricing structure, new sales possibilities--are discussed. Six references…

Describes a hardware/software configuration based on personal computers and commercially available generic software that has been assembled to support online bibliographic database searchers. Searchers' ability to trade scripts to transfer expertise in this complex field, and to provide facilities for post-processing of downloaded citations are…

Offers suggestions for avoiding common errors in online microcomputer use. Areas discussed include learning the basics; hardware protection; backup options; hard disk organization; software selection; file security; and the use of dedicated communications lines. (CLB)

Discusses downloading of data from databases using microcomputers and mass storage technologies as it relates to copyright laws and legal implications. Topics covered include a definition of copyright; original works; collective works and compilations; fair use; downloading by libraries; court bases; and resolution of uncertainty surrounding…

Addresses the question of whether interest in downloading into local electronic libraries is a reflection of user needs or is being generated by those who have something to sell. Growth of online services, growth of local computer capacity, purposes of a local electronic library, and sources of data are highlighted. (EJS)

The Video PATSEARCH system consists of a microcomputer with a special keyboard and two display screens which accesses the PATSEARCH database of United States government patents on the Bibliographic Retrieval Services (BRS) search system. The microcomputer retrieves text from BRS and matching graphics from an analog optical videodisc. (Author/JJD)

Discusses a project in which a large variety of materials from the collection of the Canadian Public Archives were recorded and played back using laser optical videodisc technology. The videodisc's capabilities for preserving, storing, and retrieving information are discussed. (Author/JJD)