______ software, also called end-user program, includes database programs, word processors, spreadsheets etc. A.Application B.System C.Compiler D.Utility A. B. C. D.
【单选题】A retriggerable one-shot has a pulse width of 10 ms. Three milliseconds (3 ms) after being triggered, another trigger pulse is applied. The duration of the resulting output pulse will be ________ ms.