You might also want to consider fitting decoupling capacitors (0.1uF) across Vcc and Gnd on each of the chips to prevent noise affecting operation of the signals. These should be fitted as near the chips as possible.
jack
You might also want to consider fitting decoupling capacitors (0.1uF) across Vcc and Gnd on each of the chips to prevent noise affecting operation of the signals. These should be fitted as near the chips as possible.
jack