A system or computer system can be said to be an electronic device or machine, which accept data, process programs and then produce a result output from the processed as information.
Moreover, they said system is general purpose in use. It handles more volume of data. It is versatile accurate, efficient, very fast etc. when compared with manual approach of carrying out operation owing to the increase in the rate with which a timely and accurate information are being demanded , there is need to provide a system to supply the necessary information where and when it is needed.
Automated of library system is a computer system for cataloging and retrieval of information in books, journals and other media. Automated library as a digitalized method of storing library resources.
A library is a collection of resources and services, and the structure in which it is housed; it is organized for use and maintained by a public body, an institution, or a private individual. In the more traditional sense, a library is a collection of books. It can mean the collection, the building or room that houses such a collection or both .
Library is a collection of literary documents or records kept for reference or burrowing  Libraries can be divided into categories by several methods:
By the entity (institution, municipality, or corporate body) that supports or perpetuates them.
Government libraries. Such as national libraries
Historical society libraries
By the type of documents or materials they hold
Picture (photograph) libraries
By the subject matter of documents they hold
Fine arts libraries
By the users they serve
Users who are blind or visually /physically handicapped (see national library service for the blind and physically handicapped)
HISTORICAL BACKGROUND OF OSUN STATE POLYTECHNIC LIBRARY IREE
Osun state polytechnic Iree was formerly a satellite campus of the Ibadan polytechnic, before Osun state was created in 12th, October 1992 by the former Head of state Gen Ibraheem Babaginda RTD) and the polytechnic became an autonomous on 2002 when the Governor of Osun state by then, Alhaji Isiaka Adeleke signed the law establishing the institution alongside and as soon as Osun state polytechnic was established the library commission was also established immediately the polytechnic commenced their operation.
STATEMENT OF THE PROBLEM
Due to problem of lack of prompt information retrieval and time wastage in using the library. In addition due to the cumbersome, in this project computer approach will be used to solve these problems. Each of the manual procedure is analyzed and is programmed using Visual Basic 6.0 in module are linked together in order to have a library system and because of its graphic user interface (G U I) feature displaying pictures and other standard objects. It's choice for the system designing because it make file organization and calculation easy it's also a popular language to stimulate most design system, most especially the database facilities so, it can store large volume of data.
PURPOSE OF THE PROJECT
The purpose of this project is to examine all the problems that faced both the library personnel especially the librarian, library Assistants, library attendant(s) and the library users, such as provides quick search facility to user who wishes to check for availability of a particular resources, it provides electronic means of storage, It help librarians keep track of library information etc.DESIGN AND IMPLEMENTATION OF AUTOMATED LIBRARY SYSTEM