3PCS Zilog Z0842004PSC NMOS/CMOS Z80-PIO Z80 PIO DIP40 Vintage You will find that National Semiconductor components are easy to source online. byJuly 4, 2026
3PCS Zilog Z0842004PSC NMOS/CMOS Z80-PIO Z80 PIO DIP40 Vintage A nice touch is the self-wrap loop that works with one hand. byJuly 4, 2026
