Contrails
The goal of the Contrails project is to help preserve and disseminate the technical record of 20th century aerospace research, highlighting in particular the research endeavors of the Illinois Tech community.

Error Control Methods for an Automatic Checkout System

Report Number: AMRL TDR 64-17
Author(s): Theodore S. Lewis; Walter J. Huebner
Corporate Author: IIT Research Institute
Laboratory: Behavioral Sciences Laboratory
Date of Publication: 3/1/1964
Pages: 156
Contract: AF 33(657)-10271
Project: 7184
Task: 718404
PB Number: PB129667
AD Number: AD0607735

Abstract:
The development of error control techniques for the mancomputer interface of an automatic checkout system is presented. To minimize human error in man-computer communication in the automatic checkout complex precedence and connection matrix techniques for use with total and partial simulation methods were developed to detect errors in operational automatic checkout computer programs. Precedence and connection matrix techniques for use with total simulation methods were incorporated into a simulation computer program which comprised a total simulation of the computer which controls an operational automatic checkout system. The modified simulation was then used to process several computer runs of an operational automatic checkout computer program. The basic conclusions were that precedence and connection matrix techniques used with total and partial simulation methods can be useful in detecting errors in operational computer-controlled automatic checkout systems.

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