I have connected a four bit seven segment display to my Arduino Uno and the wires are taking up pins 2 through 12. I've also connected a clock signal to pin 13 which will increment my display number by 5 every time a positive signal comes in. My display is working fine and counting by 5's after every clock pulse, but I would like my Arduino to read multiple signals coming in at the same time. For example, one button may add five to the display if pushed, and another may add ten to the display if pushed. I can't figure out how to connect two different signals to my Arduino due to my lack of pins available to me. Is there any solution to this problem?
The analog inputs (A0 - A5) are usable as digital I/O pins.