Q.What is meant by a Computerised Accounting System? State any three of its features.

A computerised accounting system automates much of the mechanical work that manual bookkeeping requires a person to carry out step by step.

A Computerised Accounting System is a system of maintaining a business's books of accounts using a computer and dedicated accounting software, which automatically classifies, posts, and summarises transactions once entered, following the same accounting principles as manual bookkeeping. Three of its features are speed of processing, accuracy of calculation, and integration, whereby one voucher entry automatically updates every related ledger and report.

A Computerised Accounting System (CAS) is a system of maintaining a business's books of accounts using a computer and dedicated accounting software, rather than recording entries by hand in physical registers. The transaction is entered once, and the software itself carries out the classification, posting, and summarisation that a manual system would otherwise require a person to perform through several separate steps. The underlying double-entry accounting principles remain exactly the same as in manual accounting — only the method of processing them changes.

Three of its notable features are:

1. Speed — transactions are processed and reports are generated almost instantly, without the delay of manual posting, balancing, and preparing separate statements.
2. Accuracy — once a transaction has been entered correctly, the software performs every subsequent calculation and posting without arithmetic mistakes, transposition errors, or casting errors.
3. Integration ('single entry, multiple reports') — because every ledger and report is linked to the same underlying voucher data, entering a single transaction automatically keeps the Trial Balance, Profit and Loss Account, and Balance Sheet all simultaneously up to date, without any separate manual step for each report.

(Other valid features include real-time availability of information, compact digital storage and instant retrieval, and data security through passwords and backups.)

Students sometimes describe CAS simply as 'accounting done on a computer using MS Excel or a word processor' — a true Computerised Accounting System uses dedicated accounting SOFTWARE (like Tally) with a built-in ledger/group/voucher structure and automatic report generation, not a general-purpose spreadsheet or document tool.