Define data segment.
Define data segment.
A data segment is a section of a program's object-oriented program or corresponding addressing space containing initialized static variables, that is, global parameters and regional fixed variables. This segment's size is influenced by the magnitude of values throughout the code of the program and does not adjust at runtime.
Data segment:-
The data section is read/write since it is possible to modify the values of variables at a run. This compares with the publish-only data item (.rodata or .rodata segment), which includes static variables instead of variables; it also contrasts with the line of code, that is read-only on many systems, also recognized as the given text. Rather, null pointer knowledge, both parameters, and constants are in the BSS section.
Historically, early CPUs introduced a segmentation scheme that would store a limited collection of indexes to be used as offsets for some areas in order to accommodate program memory spaces greater than that of the native size of the internal address registry. Four segments were supplied by the Intel 8086 CPU family: the code section, the data segment, a stack section, and the extra segment. The program being executed put each segment at a specific location in memory and all instructions that worked on the information in those segments were carried out relative to the beginning of that segment. It allowed 1 MB of memory space to be accessed by a 16-bit address registry that would usually be able to view 64 KB of memory space.
With particular tasks carried over into languages of the day, this segmentation of the system memory into distinct blocks and the principle is still commonly used in modern languages.
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