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The use of BRK and/or COP to request an operating system service means user applications do not have to know the entry address of each operating system function, only the correct signature byte to invoke the desired operation. Hence relocation of the operating system in memory will not break compatibility with existing user applications.
The SNC E-4C Survivable Airborne Operations Center (SAOC) is designed to incorporate advanced technologies that enhance its operational capabilities in various scenarios. One significant feature is its hardening against electromagnetic pulse (EMP) effects, which ensures that critical systems remain operational even after a nuclear event.
In the electric power industry, a transmission service request is an application requesting a transmission-owning utility to allocate physical capacity in the form of transmission service rights (TSRs) for the transmission of electric power.
Break-in or breaking in, also known as run-in or running in, is the procedure of conditioning a new piece of equipment by giving it an initial period of running, usually under light load, but sometimes under heavy load or normal load. It is generally a process of moving parts wearing against each other to produce the last small bit of size and ...
Semi break-in is a technique used by stations where slow (T/R) antenna switches are controlled indirectly by the telegraph key which lack the faster switching of full break-in stations. Semi break-in hardware T/R switches are not required to switch as fast or to have the same long term reliability as their more expensive full break-in counterparts.
Busy line interrupt, also known as emergency breakthrough, is a function of telephone land line carriers in which a telephone operator, by request of a caller, interrupts an existing phone conversation between other parties. [1] This is especially useful for services without call waiting.
A Service Request Block (SRB) is a data structure of MVS/370 and successor versions of IBM mainframe operating systems employed mainly, but not exclusively, by the Start Input/Output interface. An SRB may be considered, in the abstract, to be a highly optimized Task Control Block (TCB), one which has few, if any, associated resources other than ...
A change request is declarative, i.e. it states what needs to be accomplished, but leaves out how the change should be carried out. Important elements of a change request are an ID, the customer (ID), the deadline (if applicable), an indication whether the change is required or optional, the change type (often chosen from a domain-specific ontology) and a change abstract, which is a piece of ...