1. <programming> An independent piece of software which forms part of one
or more larger programs. Different languages have different concepts of a module
but there are several common ideas.
Modules are usually compiled seperately (in compiled languages) and provide an
abstraction or information hiding mechanism so that a module's implementation
can be changed without requiring any change to other modules. In this respect
they are similar to objects in an object-oriented language, though a module may
contain many procedures and/or functions which would correspond to many objects.
A module often has its own name space for identifiers so the same identifier may
be used to mean different things in different modules.
[Difference from package?].
2. <hardware> An independent assembly of electronic components with some
distinct function, e.g. a RAM module consisting of several RAM chips mounted on
a small circuit board.
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