The Fifth Edition of Accounting Information Systems is intended for introductory and advanced courses at either the undergraduate or graduate level. The text stresses information, communication, and networking technology with state of the art applications relating to EDI, EFT, and paperless accounting systems, applied within the context of transaction cycles and internal control structure. Transaction cycles are a conceptual approach to the study of accounting information systems. Our text was the first to emphasize a transaction cycle approach to the study of accounting information system. Detailed material on business functions and internal control structure is central to the textbook organization.