  microsoft dynamics nav is an enterprise resource planning (erp) software product from microsoft. the product is part of the microsoft dynamics family, and intended to assist with finance, manufacturing, customer relationship management, supply chains, analytics and electronic commerce for small and medium-sized enterprise and local subsidiaries of large international groups|small and medium-sized enterprises and local subsidiaries of large international groups. value-added resellers (var)s can have full access to the business logic source code. for modifications of the system, the proprietary programming language c/al is used. ==history== microsoft dynamics nav originates from navision, a suite of accounting applications which microsoft acquired in 2002. navision originated at pc&c a/s (personal computing and consulting), a company founded in denmark in 1983. pc&c released its first accounting package, pcplus, in 1984 - a single-user application with basic accounting functionality. there followed in 1987 the first version of navision, a client/server-based accounting application that allowed multiple users to access the system simultaneously. the success of the product prompted the company to rename itself navision software a/s. the navision product sold primary in scandinavia until 1990. from navision version 3 the product was distributed in other european countries, including germany and the united kingdom. in 1995 the first version of navision based on [[microsoft windows 
Accounting_software ERP_software Microsoft_Dynamics Microsoft_acquisitions