Accounting has been done manually till the 1980s, when the advent of fast computers and easy-to-use, accurate and reliable software started.An accounting system is a collection of processes, procedures and controls designed to collect, record, classify and summarize financial data for interpretation and management decision-making.Computerized Accounting involves making use of computers and accounting software to record, store and analyze financial data. A computerized accounting system brings with it many advantages that are unavailable to analog accounting systems.