Two useful observations are possible when thoroughly looking at the cathode-ray display of a computer. First, the structure of a color image is seen with a moderate magnification. Second, the decay of different phosphors corresponding to the red, green, and blue primary colors is observable with a photodiode and oscilloscope.

This article introduces a new computer conferencing metric called Scan Rate, which is a measure of students' and instructors' online reading speed. The term "scan" refers to the practice of either skimming through a message at an unusually rapid pace or reading a message partially and then stopping before the end is reached. It is…

This guide describes the various hardware and software components needed for computer-to-computer communications in nontechnical language and provides guidelines for selecting an appropriate communications package for a microcomputer. Hardware components discussed include both internal and external modems and the advantages and disadvantages of…

This guide describes maintenance procedures for IBM and Apple personal computers, provides information on detecting and diagnosing problems, and details diagnostic programs. Included are discussions of printers, terminals, disks, disk drives, keyboards, hardware, and software. The text is supplemented by various diagrams. (EW)

In this paper, we propose an auxiliary "location network", to support user-independent context-awareness in educational data networks; for example, to help visitors in a museum. We assume that, in such scenarios, there exist "service servers" that need to be aware of user location in real-time. Specifically, we propose the implementation of a…

Describes the use and applications of the communications program Telenet for remote log-in, a basic interactive resource sharing service that enables users to connect to any machine on the Internet and conduct a session. The Virtual Terminal--the central component of Telenet--is also described, as well as problems with terminals, services…

Three colleges in the state of Washington--Gonzaga College (Crosby Library), Whitworth College, and Eastern Washington University--received grants from the Fred Meyer Charitable Trust and the Library Services and Construction Act to facilitate coordinated collection development in the areas of education and business/economics, so that their…

Explains the public printing services available at computer terminals for patrons at the University of Guelph (Ontario) libraries. Highlights include configurations of the public workstations; client and server hardware and software; security features; cost projections; and printing charges. (LRW)

In October 1984, 1985, and 1986, as part of the annual School Program Survey all elementary, secondary, and adult school principals in the Los Angeles School District were asked to provide information on their current computer usage and estimates for coming semesters. This report analyses the data for each semester in the 1984-85 to 1986-87 school…

Describes the hardware components of a CD-ROM workstation and offers guidelines for selection decisions. Components discussed include CD-ROM drives; keyboards; monitors, including color and monochrome; graphics; microcomputers, including memory requirements; disk storage, including hard disks and floppy disks; and printers. Turnkey systems are…

This article proposes some techniques for enhancing large-character computer access systems to enable users with partial vision to operate them more easily and efficiently. These techniques involve mapping several areas of an application's screen into large characters and adapting this mapping in a context-specific way. (Author)

Three conference papers on rehabilitation technology, authored by staff members of the Trace Research and Development Center, form this collection. The first, "Keyboard Equivalent for Mouse Input" by Charles Lee and Gregg Vanderheiden, describes implementation of a keyboard mouse input device using the numeric keypad. The paper discusses…