I've added the KiCAD files for this project.

On the little board, there are:

  • Three triple-input AND gates (HC11) with pull-up resistors on all inputs
  • Three triple-input OR gates (4075) with pull-down resistors on all inputs
  • Six inverters with pull downs
  • Four dual-input XOR gates (HC86) with pull-downs
  • Four dual-input NAND gates (HC00) with pull-ups