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7.4 Modules and accounting packages 
A
 module
is a program which deals with one particular part of a business accounting system. 
An accounting package will consist of several modules. A simple accounting package might consist of 
only one module (in which case it is called a standalone module), but more often it will consist of 
several modules. The name given to a set of several modules is a 
suite
. An accounting package, 
therefore, might have separate modules for: 

Invoicing 

Payroll 

Inventory 

Cash 
book 

Receivables 
ledger 

Job 
costing 

Payables 
ledger 

Non-current asset register 

General 
ledger 

Report 
generator 
7.5 Integrated software 
Control is enhanced by an 
integrated accounting system
.
Each module may be integrated with the others, so that data entered in one module will be passed 
automatically or by simple operator request through into any other module where the data is of some 
relevance. For example, if there is an input into the invoicing module authorising the despatch of an 
invoice to a customer, there might be 
automatic links
: 
(a) 
To the receivables ledger, to update the file by posting the invoice to the customer's account 
(b) 
To the inventory module, to update the inventory file by:
(i) 
Reducing the quantity and value of inventory in hand 
(ii) 
Recording the inventory movement 
(c) 
To the general ledger, to update the file by posting the sale to the sales account 
(d) 
To the job costing module, to record the sales value of the job on the job cost file 
(e) 
To the report generator, to update the sales analysis and sales totals which are on file and 
awaiting inclusion in management reports 
A diagram of an