Wat (wie) is segment descriptors - definitie
B5000 Descriptors; Descriptors in Burroughs large systems
Ground segment
![Control center at NASA's [[Jet Propulsion Laboratory]]](https://commons.wikimedia.org/wiki/Special:FilePath/JPLControlRoom.jpg?width=200 "Control center at NASA's [[Jet Propulsion Laboratory]]")
![Radio dishes at an [[Embratel]] earth station in [[Tanguá]], Brazil](https://commons.wikimedia.org/wiki/Special:FilePath/Rio antennas.jpg?width=200 "Radio dishes at an [[Embratel]] earth station in [[Tanguá]], Brazil")
![Antenna belonging to the [[Deep Space Network]]](https://commons.wikimedia.org/wiki/Special:FilePath/DSN Antenna details.jpg?width=200 "Antenna belonging to the [[Deep Space Network]]")
![Space Telescope Operations Control Center at [[Goddard Space Flight Center]], during servicing of the [[Hubble Space Telescope]]](https://commons.wikimedia.org/wiki/Special:FilePath/GSFC SpaceTelescopeOperationsControl.jpg?width=200 "Space Telescope Operations Control Center at [[Goddard Space Flight Center]], during servicing of the [[Hubble Space Telescope]]")
![Tsukuba]], Japan](https://commons.wikimedia.org/wiki/Special:FilePath/Tsukuba.jpg?width=200 "Tsukuba]], Japan")
![Decommissioned launch site at the [[Guiana Space Centre]]](https://commons.wikimedia.org/wiki/Special:FilePath/CSG Ariane 4 Launch Site.JPG?width=200 "Decommissioned launch site at the [[Guiana Space Centre]]")
GROUND-BASED ELEMENTS OF A SPACECRAFT SYSTEM
Satellite control segment; Ground Segment; Transfer segment; User segment; Ground control segment; Ground control system
A ground segment consists of all the ground-based elements of a space system used by operators and support personnel, as opposed to the space segment and user segment. The ground segment enables management of a spacecraft, and distribution of payload data and telemetry among interested parties on the ground.
Event segment
A segment of a system variable in computing shows a homogenous status of system dynamics over a time period. Here, a homogenous status of a variable is a state which can be described by a set of coefficients of a formula.
code segment
PORTION OF AN OBJECT FILE CONTAINING EXECUTABLE INSTRUCTIONS
Text segment; .text
<memory> (Intel 8086 CS) The area of memory containing the
machine code instructions of a program. The code segment
of a program may be shared between multiple processes running
that code so long as none of them tries to modify it.
Unix, confusingly, calls this the "text segment" and the
area for uninitialied data, the bss segment.
Initialised data is located in the data segment.
(1996-12-21)
Wikipedia
Burroughs large systems descriptors
Descriptors are an architectural feature of Burroughs large systems, including the current (as of 2006) Unisys Clearpath/MCP systems. Apart from being stack- and tag-based, a notable architectural feature of these systems is that it is descriptor-based. Descriptors are the means of having data that does not reside on the stack as for arrays and objects. Descriptors are also used for string data as in compilers and commercial applications.
