NonStop System Glossary

ideogram
See ideograph.
ideograph
A character or symbol representing a word or idea. Some writing systems, such as Japanese and
Chinese, use thousands of ideographs. An ideograph is sometimes called an ideogram.
IEC
International Electrotechnical Committee. IEC is a professional organization that creates or adopts
standards for computer hardware, environments, and physical interconnections.
IEEE
Institute of Electrical and Electronics Engineers. IEEE is a professional organization whose committees
develop and propose computer standards that define the physical and data link protocols of entities
such as communication networks.
IEEE 802.3 protocol
Institute of Electrical and Electronics Engineers (IEEE) standard defining the hardware layer and
transport layer of (a variant of) Ethernet. The maximum segment length is 500 meters, and the
maximum total length is 2.5 kilometers. The maximum number of hosts is 1024. The maximum
packet size is 1518 bytes.
IID
See interrupt ID (IID).
IKE
Internet key exchange.
impedance
The total opposition (that is, resistance and reactance) a circuit provides to the flow of alternating
current at a given frequency.
implementation-defined
Not specified by a standard. A correct value or behavior that is implementation-defined can vary
from system to system and therefore might represent a feature or facility that cannot be ported.
implicit library
A library supplied by HP that is available in the read-only and execute-only globally mapped
address space shared by all processes without being specified to the linker or loader. See also
TNS system library and public library.
implicit library import library (imp-imp)
See import library.
implied user library
A method of binding TNS object files that have more than 16 code segments. Segments 16 through
31 are located in the user code (UC) space but are executed as if they were segments 0 through
15 of the user library (UL) code space. This method precludes the use of a user library. Binder now
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