Meaning and Need for a Computerised Accounting System

Every business, however small, generates a stream of transactions — sales, purchases, receipts, payments — that must be recorded, classified and summarised before they can tell an owner anything useful about the state of the business. In a manual accounting system this entire cycle, from writing an entry in the journal to posting it to the ledger, balancing the ledger accounts, drafting a trial balance and finally preparing the trading, profit and loss account and balance sheet, is carried out by hand, entry by entry, page by page.

A Computerised Accounting System (CAS) replaces this manual chain with computer hardware and accounting software. Once a transaction (a sale invoice, a purchase bill, a payment voucher) is keyed in once, the software itself performs the postings, extends the ledger balances, extracts a trial balance and generates the financial statements — continuously and automatically, without a human having to redo the arithmetic at every stage. The CHSE Odisha +2 Accountancy syllabus places this topic right after the manual bookkeeping cycle, precisely so the two can be compared meaningfully rather than studied as unrelated topics.

Why business enterprises need a computerised accounting system:

• Growing volume of transactions. As a firm grows, the sheer number of vouchers to be journalised and posted makes manual bookkeeping slow and increasingly error-prone.
• Speed and timeliness. Reports that would take days to compile by hand — a trial balance, a stock statement, an outstanding-debtors list — can be generated in minutes, so decisions are based on current, not stale, figures.
• Accuracy. Once a voucher is entered correctly, every subsequent posting, total and cross-total is calculated by the software itself, eliminating the casting and carry-forward errors that creep into manual ledgers.
• Statutory compliance. Indian businesses must file periodic GST returns, deduct and deposit TDS, and maintain records the tax authorities can inspect — computerised records make these returns and reconciliations far easier to prepare and retrieve.
• Multiple books and locations. A business with several branches or godowns can consolidate all of them into one accounting system instead of maintaining separate physical books.
• Better decision-making. Management gets ready access to analytical reports (profitability by product, ageing of receivables, cash-flow position) that would be impractical to prepare by hand on a regular basis.

A computerised system does not eliminate the need to understand accounting principles — it only automates the mechanical part of applying them. A person operating the software must still know which account to debit and which to credit; the computer simply removes the drudgery and the arithmetic risk from what follows.