NonStop System Glossary

character special file
In the Open System Services (OSS) environment, a device that is treated as a file for which all
input or output must occur in character bytes. Traditionally, such files are interactive terminals, and
the ISO/IEC IS 9945-1:1990 standard defines only the access to such terminal files. See also
terminal. Contrast with block special file.
chassis
A single sheet-metal structure that holds all the other components of an enclosure. See also enclosure.
checksum
A generic term, meaning to add together (although the definition of add need not be a normal
arithmetic add) all of the data to produce a check word. See also cyclic redundancy check (CRC).
child process
A process created by another process. The creating process becomes the parent process of the
new process. See also parent process.
CIIN
A command file in the SYSnn subvolume that is read and executed by the startup TACL process
after system load if the CIIN file is specified in the CONFTEXT file and enabled in the Low-Level
Link for OSM or TSM.
CIP
See Cluster I/O Protocols (CIP).
CIPMAN process
The CIP SCF management object.
CIPMON process
The CIP SCF monitor object.
CIPSAM process
The CIP SCF transport service provider object.
circuit breaker
A device designed to open and close a circuit by nonautomatic means and to open the circuit
automatically on a predetermined overcurrent without damage to itself.
CISC compiler
See TNS compiler.
CISC processor
An instruction processing unit (IPU) that is based on complex instruction-set computing (CISC)
architecture.
class
A group of object-oriented data entities and the methods associated with that group.
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