1 RC2014 Bubble LED PCB 1 40 pin RA header 2 20 pin narrow DIL socket 1 18 pin narrow DIL socket 1 16 pin narrow DIL socket 1 24 pin narrow DIL socket 1 ULN2803A 2 74HCT374 1 74HCT138 2 HP 7414 Display 4 100nf 6 1N4148 1 10k resistor 8 330R resistor