A reconfigurable control unit is disclosed for providing an operator interface to control units on different types of work vehicles, such as, tractors, combines, sprayers, etc. The reconfigurable control unit stores a plurality of application programs in a memory and selects only the application program...http://www.google.com.au/patents/US6167337?utm_source=gb-gplus-sharePatent US6167337 - Reconfigurable control unit for work vehicles