The impact of computerized information in libraries affects almost every aspect of the library, and of librarianship This paper will focus on several areas where the impact can be clearly seen from visiting libraries, from art museum libraries, to the largest university and national libraries in the U.S. The first is the architecture of the reading room. No more the endless landscape of reading tables with lamps; no more large wooden card catalogs; these have given way to computer carrels, and rows of computers with printers. The second area of impact of electronic resources is the absence of the reference room shelves full of indexes to periodicals, which used to be published annually. These have nearly all migrated to a computerized version, which is so much faster to search, and updated at least quarterly. It is difficult to remember the days when one had to pull out a volume for each year to find all the entries on a topic of research. And to take this one step further, many periodicals are available in computerized form, and can be linked to from the index on the Web. The third area of impact is the change in role of the librarian. The librarian must teach her users not only what databases are available to them through the library's subscriptions, but which are relevant to their research topic and also how to access each one — the passwords, the search techniques, etc. The goal of the librarian is not only to help a researcher find answers to their questions in the library, but also to make researchers self sufficient, so they can locate the information from any location — their offices, their homes, or in other libraries. Not only are there special librarians who focus on bibliographic instruction, but there are systems librarians, electronic resources librarians, and librarian Webmasters. The Internet has given researchers the ability to search hundreds of library catalogs, as well as many other databases of information, at their desktop computers. Along with the library catalogs available on the Internet, there are usually accompanying Web pages describing the library, its hours, access policies, the strengths of the collection, and a way to query the librarians directly via email. This is yet another change in the way the librarian works; instant replies to research queries via email are expected. The fourth area impacted by computerized information is the impression that there is no longer any need to consult books, but rather the Internet has all the information needed. This creates yet another job for the librarian — to clear up this misconception, and introduce the researchers and students to ways of evaluating on-line resources, and to introduce them to vital sources in print form. The fifth and final change to be examined is the dependency of the librarian on the people in the Information Systems departments. Without their aid and support, there is no way to deliver information over the Internet or local area network at all. They maintain the servers, set up networks and passwords, they install firewalls, and they are the only staff allowed to install software onto computers. Too often institutions are not prepared for the expense of hiring and keeping good information technologists. The IS departments are usually new, and many organizations do not want to expend money on personnel when the cost of buying and maintaining all the hardware is so expensive. But, what is a day at the library like now when the computers are down?