
Paper F1: Accountant in business
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4.2 Business uses of computer systems
Most business processes can be computerised. Computerisation is common in
accounting, where computers are used for book-keeping (financial transaction
processing), and preparing financial reports and budgets.
Business uses of computer systems might be divided into the following broad
categories.
Office routines. Computer systems can be used to assist with office routines,
such as preparing letters and reports (Word processing) and sending messages
(e-mails).
Transaction processing. Transaction processing systems have already been
mentioned. Many business entities computerise transaction processing,
particularly accounting transactions.
Management information systems. These are computer systems that provide
management information. Information might be provided in the form of
standard reports. Alternatively, a computer system might provide information
on request, in response to a specific enquiry. Transaction processing systems
often provide management information too. For example, a system for recording
payments from customers (receivables) can also provide management
information to the credit control department about overdue payments.
Decision support systems. Computer systems can be used to help management
make plans and forecasts, or to construct ‘models’ to assist with other types of
decision making.
Expert systems. Some computer systems are able to provide expert advice in
response to enquiries. For example, there are expert systems for the law, and an
expert computer system can provide legal advice or legal information in
response to specific enquiries.
4.3 Main features of a computerised accounting system
Computerised accounting systems share the same general characteristics.
Accounting data is held on computer files. There files for customers
(receivables), suppliers and purchases (payables), inventory, employees (payroll)
and so on. For each customer, supplier, employee or inventory item, the file
contains ‘standing data’ and ‘transaction data’.
Data about transactions is entered into the computer system. There are various
methods of data input. In microcomputer-based systems, transactions are
commonly entered into the system by keyboard and mouse. When a system
relies on human input by keyboard and mouse, there is a fairly high risk of
errors.
The computer program can recognise different types of input transaction, such
as sales invoice data, credit note data, sales returns and cash receipts (payments
received from customers) in a receivables system.
Standing data in the files reduces the amount of data that needs to be input to
the system. For example, entering the account number of a customer into a sales
invoicing system is sufficient to enable the system to recognise the customer
name, address and other ‘standing data’ on file.