Accession Number : ADA116566

Title :   Combined HW/SW Reliability Models.

Descriptive Note : Final technical rept. Feb 80-Feb 81,

Corporate Author : HUGHES AIRCRAFT CO FULLERTON CA GROUND SYSTEMS GROUP

Personal Author(s) : James,L E ; Angus,J E ; Bowen,J B ; McDaniel,J

PDF Url : ADA116566

Report Date : Apr 1982

Pagination or Media Count : 158

Abstract : A general methodology is developed for combining hardware and software reliability. Based on this general methodology, a baseline combined HW/SW reliability was developed incorporating and unifying the SW reliability theory of Jelinski-Moranda, Goel-Okumoto with traditional HW reliability theory. The baseline model is computerized and includes various HW/SW failure and repair characteristics, allowance for imperfect SW debugs and modes of HW/SW interaction. Finally a HW/SW tradeoff procedure is developed using a combined HW/SW availability measure. Examples are provided to illustrate the general theory and tradeoff procedure. (Author)

Descriptors :   *Computer program reliability, Computers, Computer programs, Reliability, Weapon system effectiveness, Data bases, Interactions, Markov processes

Subject Categories : Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE