Accession Number : AD0274786

Title :   TIME AND ERROR IN HUMAN RECOGNITION OF ARABIC AND BINARY-CODED DECIMALS

Corporate Author : ARMY ELECTRONICS LABS FORT MONMOUTH N J

Personal Author(s) : HUEBNER,D.L.

Report Date : JAN 1962

Pagination or Media Count : 1

Abstract : The feasibility of using direct human readout of binary-coded decimals in lieu of using a binaryto-decimal conversion device plus human readout was investigated. During three experiments, fourteen subjects were given a one-hour period of training in binary-coded-decimal readout. Statistical significance could not be established because of the small number of subjects in the sample. The following results were obtained: (a) The mean verbal response readout rate was 48 characters in 35 seconds for binary symbols as compared with 16 seconds for the same number of Arabic symbols; (b) The mean written rate was 48 characters in 39 seconds when reading binary symbols, and 34 seconds for Arabic readout; and (c) The error rate averaged 4.7 per thousand characters for binary written readout, and 2.0 per thousand for Arabic readout. Considering the fact of only one hour of training, the 15percent l ss of speed would not alone appear to be a sufficient disadvantage to justify providing a machine for converting binary to Arabic symbols. An experimental binary-coded-decimal notation system suitable for hand rendition and for human and machine readout is presented. (Author)

Descriptors :   *IDENTIFICATION SYSTEMS, ERRORS, FEASIBILITY STUDIES, MACHINES, HUMANS, TIME

Distribution Statement : APPROVED FOR PUBLIC RELEASE