(i) Ready-to-use accounting packages are best suitable for small and conventional business.
(ii) Customised accounting packages are best suitable forlarge and medium business.
(iii) Tailored accounting packages are best suitable for large and typical business 

Language processor.

Operating environment.

A computer system accepts input in the form of raw data, processes it and gives desired results called output.

Code is an identiflcation mark. Generally, computerised accounting involves codification of accounts. codification of accounts is neededwhere there are numerous accounts heads in an organisation. There is a hierarchical relationship between the groups and its components. In order to maintain the hierarchical relationships between a group and its sub-groups proper codiflcation is required.

Examples of Readymade software:
(i) TALLY
(ii) MS-EXCEL

(i) Readymade Software
(ii) Customised Software

(i) Accounting software is an integral part of the computerised accounting system.
(ii) The main function of computerised accounting system is to perform the accounting activities in an organisation, generate reports as per the requirements of the users.

A set of programs that form an interface between the hardware and the user of a computer system are referred to as software.

A computer can be described as an electronic device designed to accept raw data as input, processes them and produce meaningful information as output. It has the abitity to perform arithmetic and logical operations as per given set of instructions called program.