Programs and techniques used to detect and isolate faults in a system, component or program. A diagnostic program will usually produce a printout containing an analysis of the operation being checked in order to assist with fault finding and correction.

• 用于检测和隔离某一系统、部件或程序中的故障或错误的程序和技术。通常为了有助于故障的发现和纠正,诊断程序将打印输出对运行情况所做的检测的分析。