Quick Links Cool Downloads FAQs Exhibit Project Community Links Retro Computing Forum Insanity4004: 4004 in an FPGA. Links to OpenCores Verilog code, schematics. Visual 6502 Project Federico Faggin's 4004 history blog FastZ80: Z80 Emulator IT History Society News Klaus Scheffler finishes his complete 4-bit computer (CPU+RAM+I/O) based on the Intel 4004 schematics using discrete transistors. Comput