An Experimental On‐line Retrieval System using Ultrafiche
R. J. D. Johnston · Data Technologies and Applications · 1975
The command language devised for an experimental on‐line information retrieval system which uses an automatic Ultrafiche terminal to store and display the textual data is described. A conversational reference retrieval system was set up on a PDP‐8 minicomputer with a data base selected from Computer & control abstracts. Search facilities available include Boolean logic, left‐hand and right‐hand truncation, universal character, and a profile editor.