Computer programs and data stored in hardware - typically in read-only memory (ROM) or programmable read-only memory (PROM) - such that the programs and data cannot be dynamically written or modified during execution of the programs.
Sources:
CNSSI 4009-2022 from IETF RFC 4949 Ver 2
NIST SP 1800-10B under Firmware
NIST SP 800-37 Rev. 2
NIST SP 800-53A Rev. 5 from CNSSI 4009-2022

  The material physical components of an information system.
Sources:
CNSSI 4009-2022 under hardware from IETF RFC 4949 Ver 2

  Computer programs (which are stored in and executed by computer hardware) and associated data (which also is stored in the hardware) that may be dynamically written or modified during execution.
Sources:
CNSSI 4009-2022 under software from IETF RFC 4949 Ver 2

  Computer programs and associated data that may be dynamically written or modified during execution.
Sources:
NIST SP 800-37 Rev. 2 under software
NIST SP 800-53 Rev. 5 under software from CNSSI 4009-2022
NIST SP 800-53A Rev. 5 under software from CNSSI 4009-2022

  The material physical components of a system. See software and firmware.
Sources:
NIST SP 800-171r3 under hardware from CNSSI 4009-2022
NIST SP 800-37 Rev. 2 under hardware
NIST SP 800-53 Rev. 5 under hardware from CNSSI 4009-2022
NIST SP 800-53A Rev. 5 under hardware from CNSSI 4009-2022

  Software that is included in read-only memory (ROM).
Sources:
NIST SP 800-147 under Firmware
NIST SP 800-147B under Firmware

  Computer programs and data stored in hardware - typically in read-only memory (ROM) or programmable read-only memory (PROM) - such that the programs and data cannot be dynamically written or modified during execution of the programs. See hardware and software.
Sources:
NIST SP 800-53 Rev. 5 from CNSSI 4009-2022

  See hardware and software.
Sources:
NIST SP 800-53A Rev. 5

  Computer programs and data stored in hardware – typically in read-only memory (ROM) or programmable read-only memory (PROM) – such that the programs and data cannot be dynamically written or modified during execution of the programs. See hardware and software.
Sources:
NIST SP 800-171r3 from CNSSI 4009-2022

  The material physical components of a system.
Sources:
NIST SP 800-172r3 under hardware

  Software program or set of instructions programmed on the flash ROM of a hardware device. It provides the necessary instructions for how the device communicates with the other computer hardware.
Sources:
NISTIR 8183 under Firmware from TechTerms.com
NISTIR 8183 Rev. 1 under Firmware from TechTerms.com
NISTIR 8183A Vol. 1 under Firmware from TechTerms.com
NISTIR 8183A Vol. 2 under Firmware from TechTerms.com
NISTIR 8183A Vol. 3 under Firmware from TechTerms.com