I have a 555 Timer tuned in at 2 Hz according to 1.44 / R1 + (2)R2 (C) whose output goes into pin 14 of a 7490 decade counter. the decade is cascaded into a 7493 Binary counter which goes to 7447 decoders to drive 2 segment displays to count up.....my question is pin 14 I was talking out on the 7490 is CLK "A" input.....pin 1 is CLK "B" is that my input from lets say a frequency generator so my circuit will actually count?