Accession Number:

AD0274786

Title:

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

Descriptive Note:

Corporate Author:

ARMY ELECTRONICS LABS FORT MONMOUTH N J

Personal Author(s):

Report Date:

1962-01-01

Pagination or Media Count:

1.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE