Systems analysis of an operating system consists of the evaluation of the efficiency, economy, accuracy, and productivity of existing procedures measured against the stated objectives of the library; and the design of new procedures to satisfy the demands of management and user. The data processing subsystem performs ongoing operations of function and decision, which are the elements of system design. A total library system develops methods to utilize three major types of data: bibliographic, fiscal, and inventory. The analys t surveys input and output with worksheet summaries and translates the stated goals of the library into system requirements. Evaluation of current operations precedes design of the new system, which can be planned and tested by flow chart simulation. The final steps to be taken are cost comparisions of the old and new systems, staffing specifications, the writing of reports and manuals, and debugging computer systems, although the end result of systems analysis need not always be an automated system. (TI)