installer

n. one who installs, one who puts in place

Installation (or setup) of a program (including drivers) is the act and the effect of putting the program in a computer system so that it can be executed. Most programs are supplied in a condensed form intended for sale and distribution. In order to be used, they must be 'unpacked' and the relevant information placed correctly on the computer, taking account of variations between computers, and any customized settings required by the user. During installation, various tests are made of system suitability, and the computer is configured to store the relevant files and any necessary settings required for that program to operate correctly.
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v. instal, set up; induct, set; wire

<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.
(1998-02-09)

Installer