Discusses problems in using ASCII for data communications and computers and provides a historical perspective on the development of Unicode, a new universal encoding scheme. The future of Unicode is considered, implications for libraries are discussed, and a sidebar explains how computers store textual data. (LRW)

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.…