Components of accounting information system definition including break down of areas in the definition. Analyzing the definition of key term often provides more insight about concepts. Components of accounting information system can be defined as: People, records, and methods that collect and process data from transactions and events, organize them in useful forms, and communicate results to decision makers. Principles of accounting information system include control, relevance, comparability, flexibility and cost benefit principle. Components of accounting information system include source document, input device, information processor, information storage, and output device.