You should first .<span>consider how you could shorten the column labels. Shortening the column labels could be easily done by dragging the column to the size that we want. But when shortening the column labels, some problems might occur such as the content might be distorted and in will become unevenly placed.</span>
The triangle indicates that the clock signal is an edge-triggered signal. The circle indicates that the signal is low-active (ie., inverted). The 74LS74 has a positive-edge trigger clock (low to high).
