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Computing (FOLDOC) dictionary (also found in English - Vietnamese, French - Vietnamese)
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operating system A utility program to ease the
installation of another, probably larger, application. It
is also possible for hardware to have an installer accompany
it, to install any low level device drivers required.
The installer commonly asks the user to enter desired
configuration options for the main program or hardware, and
sets up various initialisation files accordingly, as well as
copying the main program to a hard disc.
Some badly designed operating systems require applications to
provide an uninstaller because of the number of different
files modified or created during the installation process.