A Dynamic Link Library (DLL) file comprises a program code that is used by Windows operating systems and applications installed on them to perform one or more functions. DLL files cannot be run manually by users. They need to be called on either by other DLL or executable files. There are a number of DLL files included within all Windows operating systems launched after Win 95. Many other DLL files are installed on your system when you install various applications on your computer.
DLL files can be used to perform both simple functions, such as including a search feature in applications, and to perform more complicated tasks, such as a module in a programming language. DLL files also help in splitting an application into smaller and separate dll files. This way, only the information (DLL) that is needed to perform a task is loaded in the memory and all other DLL files remain on the hard disk.
