NonStop S-Series Hardware Installation and FastPath Guide (G06.25+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529443-001
Glossary-4
alternating current (AC)
alternating current (AC). An electric current having a waveform that regularly reverses in
positive and negative directions. North American electrical power alternates 60
times/second (60 hertz). European electrical power alternates at 50 hertz. Contrast
with direct current (DC).
amperage. Current-carrying capacity, expressed in amperes.
ampere (A). The unit of electrical current or rate of flow of electrons. One volt across one
ohm of resistance causes a current flow of one ampere. A flow of one coulomb/second
is defined as one ampere of current.
ANSI. The American National Standards Institute.
APE. See Application Program Examiner (APE).
API. See application program interface (API).
appearance side. The side of an HP NonStop™ S-series system enclosure that contains
disk customer-replaceable units (CRUs) and power monitor and control unit (PMCU)
CRUs that do not require cables. The appearance side always has a short door and
panel, or a tall door, that is required for cooling the enclosure. The appearance side is
opposite the service side. The appearance-side door is lockable for security purposes.
See also service side.
application binary interface (ABI). The conventions used to call functions and access
global or external data.
application development environment (ADE). A set of methods and tools that are used
throughout the lifecycle of an application project to design, code, and manage that
project.
Application Program Examiner (APE). A tool used to browse through TNS object files that
have been accelerated by the Accelerator. APE displays MIPS RISC code in addition
to TNS code.
application program interface (API). A set of services (such as programming language
functions or procedures) that are called by an application program to communicate with
other software components. For example, an application program in the form of a client
might use an API to communicate with a server program.
application-specific integrated circuit (ASIC). A custom-built integrated circuit (IC) used
to perform highly specialized functions.
Apply. The Distributed Systems Management/Software Configuration Manager (DSM/SCM)
action of executing the instructions contained in an activation package, such as placing
new software on the target system and taking a snapshot of the new target system.