Computer technology, both hardware and software, is deriving all benefits from the advances made in solid state physics and electronics. The new innovations in hardware technology, particularly storage media, microelectronics, VLSI, etc., have reduced the cost of the computer. A wide range of general-purpose and special-purpose computers, mini-computers, microcomputers, microprocessors etc., are the types which can be used in libraries. Planning and management also become efficient, cost-effective and result oriented. Use of modern information technology in management of libraries is described pros and cons in this book. The whole information is organised in ten chapters viz. introduction; computer in library management; software installation; online computer service; electronic service delivery; terminal software, computer selection; library network hardware; multimedia catalog; and library networking etc.