Intended for use by data processing installation managers, operating personnel, and technical staff, this publication provides a comprehensive set of care and handling guidelines for the physical/chemical preservation of computer magnetic storage media--principally computer magnetic tapes--and their stored data. Emphasis is placed on media…

This article presents a brief history of the videodisc and describes three major current manifestations of this storage medium--read-only, write-once, erasable. The current status of write-once technology, major corporations involved in the field, potential uses for various types of storage media, and software and market trends are highlighted.…

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…

Discusses the preservation of electronically produced data focusing on the passive destruction of data due to lack of proper care in information storage. Three case studies are presented: two involve specific media--magnetic tape and CD-ROM (compact disk read-only-memory)--and one the transfer of data from one system to another. (EM)

This document contains the codebooks and data record layouts for the 1985-86 Public-Use Data Tapes, Version 1.0. The Public-Use data tapes are created by the National Assessment of Educational Progress (NAEP) to provide outside researchers access to NAEP data. This book provides coded data collected on and from third graders and 9-year-olds via…

This document is the users' guide for Version 1.0 of the Public-Use data tapes compiled by the National Assessment of Educational Progress (NAEP), 1985-86. The Public-Use tapes are produced to allow outside researchers access to the NAEP data. The tapes accompanying this guide, one for grade 3/age 9, one for grade 7/age 13, and one for grade…