1 RC2014 512K ROM RAM PCB 1 ASC6C4008 1 ST39SF040 1 74HCT74 1 74HCT138 1 74HCT139 2 74HCT670 4 1k resistor 4 4k7 resistor 6 100nf 1 40 pin RA header 1 14 pin narrow DIL socket 4 16 pin narrow DIL socket 2 32 pin wide DIL socket