Accession Number : AD0291796

Title :   EXPERIMENTAL STUDY OF BINARY CODED KEYSETS

Corporate Author : NAVY ELECTRONICS LAB SAN DIEGO CALIF

Personal Author(s) : NEWMAN,K.M. ; COBURN,R. ; MCMAHAN,R.C.

Report Date : 24 SEP 1962

Pagination or Media Count : 1

Abstract : Factors affecting the efficiency of man-machine systems, including the design and use of displays and controls, were determined. The work covered by thi report is an experimental study of five eyset entry techniques for use in realtime computer-aided ystems. both qualitative and quantitative data can be entered accurately and rapidly using a four-key binary coded decimal keyboard. Keyset design has a direct bearing on speed-vs.-error trade-off by operators. Encoding tasks, if kept fairly simple, can be performed by experienced operator as part of informati n entry without detriment of the over-all process. Patterned key pressing by the touch syste can be used efficiently by trained operators. Recommendations are: (1) conduct a controlled study comparing the best form of the experimental keyset developed for this study with the Remington Rand Univac NTDS Keyset currently in se; (2) keep keyset information entry in binary form to permit direct computer input and avoid costly conversion units; (3) design keysets to permit patterned and sequential entry of all information without vis al reference to the keyset, although visual feedback; (4) plan the sequence of keyset entry processes so that they conform to natural human motor responses and habits; and (5) design keysets with t e flexibility and capacity of trained operators in mind. (Author)

Descriptors :   *COMPUTERS, *DATA PROCESSING, ANALYSIS OF VARIANCE, DATA STORAGE SYSTEMS, INFORMATION RETRIEVAL, MAGNETIC TAPE, PUNCHED CARDS

Distribution Statement : APPROVED FOR PUBLIC RELEASE