Introduction to Computerised Accounting

As businesses grow, the volume of transactions becomes too large to handle by hand. A Computerised Accounting System (CAS) uses computers and accounting software to record, process and report financial transactions. It applies exactly the same accounting principles you have learned — debit, credit, ledger, trial balance — but the computer does the posting, balancing and statement preparation automatically.

A CAS has four components, often summarised as people, procedures, data and machines:

• Hardware — the physical machines (computer, server, printer, network).
• Software — the accounting program (e.g. Tally) that processes the data.
• People (operators) — the trained staff who enter and use the data.
• Procedures & Data — the rules followed and the accounting information fed in.

The advantages over manual accounting are large:

• Speed — thousands of entries processed in seconds.
• Accuracy — once data is entered correctly, calculations are error-free.
• Reliability & automatic reports — the trial balance, P&L and balance sheet are generated instantly and always agree.
• Storage & retrieval — huge data kept in little space, found in moments.
• Up-to-date information and easy scalability as the business grows.

There are also limitations — cost of setup and training, the risk of data loss or hacking, system failures, and reduced employment of clerks — but for any sizeable business the benefits clearly outweigh them.

Both systems reach the same destination — final accounts — but the journey differs.

In a CAS, the user does the identifying and recording (entering vouchers); the software does the classifying, summarising and reporting. This is why correct data entry is so important — "garbage in, garbage out."

Accounting software comes in three broad kinds:

• Ready-to-use (packaged) software — standard, low-cost packages for small/medium firms (e.g. Tally, Busy). Easy to learn but less customisable.
• Customised software — a ready package modified to suit a firm's special needs; costs more.
• Tailor-made (bespoke) software — built specially for a large organisation's unique requirements; most expensive, needs trained staff.

In India, Tally (and now Tally Prime) is the most widely used package — it handles vouchers, ledgers, inventory, GST, payroll and instant final accounts. Learning its concepts (creating a company, ledgers, voucher entry) is a valuable, employable skill that builds directly on this course.

At the heart of every accounting package is a database — an organised collection of related data stored so it can be easily accessed and managed. Some basic database terms:

• Data — raw facts (e.g. a customer's name, an amount).
• Field — a single item of data (a column, e.g. "Invoice No.").
• Record — a complete set of fields about one entity (a whole row, e.g. one invoice).
• Table — a collection of related records.
• Primary key — a field that uniquely identifies each record (e.g. account code).

Accounting software stores ledgers, vouchers and inventory in such tables, linked together, so a single voucher automatically updates the ledger, the trial balance and the final accounts — one entry, many updates. This is the power of a database-driven system.

Modern packages are also GST-ready. When you enter a sales voucher, the software automatically computes CGST + SGST (intra-state) or IGST (inter-state), records the output tax, tracks input tax credit on purchases, and can even generate the GST returns — a task that would take hours by hand.

This automation is the real meaning of computerised accounting: the accountant focuses on judgement (what to record, how to classify, how to interpret) while the machine handles the mechanics (posting, totalling, tax, reports) instantly and without error. Knowing both the principles (from this whole course) and the tools (software, databases, GST) makes you ready for the real world — and for Class 12, CUET, B.Com and CA Foundation, where these foundations are built upon. That completes Class 11 Accountancy: from the very first transaction to a fully computerised, tax-compliant set of books.