Computer-aided maintenance (not to be confused with CAM which usually stands for Computer Aided Manufacturing) refers to systems that utilize software to organize planning, scheduling, and support of maintenance and repair.
A common application of such systems is the maintenance of computers, either hardware or software, themselves.
The first computer-aided maintenance software came from DEC in the 1980s to configure VAX computers.
During the research, the software was called R1 and was renamed XCON when placed in service.
Fundamentally, XCON was a rule-based configuration database written as an expert system using forward chaining rules.