volleyball scoreboard

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i tried program in wanted display numbers using  3 separate single digit 7 segment counts 0 - 9 . each display has separate push button switch increment , decrement number. used 3 ports data pin( datapin1, datapin2 , datapin3) each display , 1 latch pin , 1 clock pin 3 displays.  set didn't work. wander if sis possible. arduino community advice.

quote
this set didn't work.
are latching, clocking, , sending data 1 segment @ time? or, latching , clocking while sending data 3 segments?


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