Document: NUREG-0800
Document ID: a2598df1-7ec6-43a6-9d2a-d8210d1f944f
Document Type: srp
Title: through 7.9. Additional information relevant to the review process can be found in the references in
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500461.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
CFR Part: 
CFR Title: 

Content:
ut and lead to and include the issuance of design output documents (ASME Std NQA-1). A design requirement is a requirement that specifies or constrains the design of a system or system component (IEEE Std 610.12, "IEEE Standard Glossary of Software Engineering Terminology"). Deterministic refers to a property of a computer or communication system such that the time delay between stimulus and response has a guaranteed maximum and minimum. Embedded software or firmware is software that is built into (stored in read-only memory) a computer dedicated to a pre-defined task. Normally, embedded software cannot be modified by the computer that contains it, nor will power failure erase it; some computers may contain embedded software stored in electrically erasable programmable read-only memory (EEPROM), but changing this memory typically requires a special sequence of actions by maintenance personnel. A function is a specific purpose of an entity or its characteristic action (IEEE Std 610.12, "IEEE Standard Glossary of Software Engineering Terminology"). A functional characteristic is a trait or property of a design output that implements a functional requirement, a portion of a functional requirement, or a combination of functional requirements. BTP HICB-14 identifies specific functional requirements considered in software reviews. A functional requirement is a requirement that specifies a function that a system or system component must be capable of performing (IEEE Std 610.12). In this appendix, the term functional requirement includes design requirements, interface requirements, performance requirements, and physical requirements, as described in IEEE Std 610.12. Hardware critical characteristics are those properties or attributes of computer, peripheral, or communication hardware that are essential for performance of the connected equipment's safety function. This includes meeting specifications that are required to execute the software intended to run on the hardware,