n.A computer system that performs and logs routine business activities.
Bantin 2002 The most basic business system and the heart of most organizations is the Transaction Processing System (TPS). . . . The primary goal of these systems is to automate computing intensive business transactions, such as those undertaken in the financial and human resource functional areas. The emphasis is on processing data (sorting, listing, updating, merging), on reducing clerical costs, and on outputting documents required to do business, such as bills, paychecks and orders. The guiding principles of these systems are to create data that is current, accurate, and consistent.