Not yet answered Marked out of 1.00 39 In the synchronous binary counter, all flip flops ......must trigger on .a .the negative edge of the clock .b either negative or positive edge of the .clock O .the positive edge of the clock O .d .None of the mentioned choices Not yet answered Marked out of 1.00 40 To design a BCD Ripple Counter you need at least 3" :flip flops", this statement is False .b True