A counter consisting of a flip-flop requires the recording of 100 count pulses, requiring at least ________ flip-flops. Choose A,B or C. Each flip-flop can output one binary number, if we want to get N counting pulses, we should make sure that 2.^n>=N, where n indicates the number of the filp-flops. 一个由触发器组成的计数器 ,要求能记录100个计数脉冲,至少需要________ 个触发器 .