Q.Computerised Accounting System (CAS) is based mainly on the principle of —
Option (b) is correct. A Computerised Accounting System is built on the principle of 'record once, use many times' — a transaction is entered into the system only once, as a voucher, and the software itself automatically posts it to every affected ledger and makes it available for as many reports (Trial Balance, Trading Account, Profit and Loss Account, Balance Sheet, stock statements, etc.) as required. Option (a) describes exactly the opposite — the repetitive, multiple recording that a manual system requires (Journal, then Ledger, then Trial Balance, each written out separately), which computerisation is meant to remove. Option (c) is wrong because a CAS still fully follows double-entry book-keeping — it applies the same debit-credit rules, only automatically. Option (d) is wrong because the Trial Balance in a CAS is generated automatically from the vouchers already entered, not prepared manually each day.
(b) Recording each transaction once and using it for many reports — the 'record once, use many times' principle.
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