You can still do it old-style with no custom-made PC boards ... I actually have quite a few protoboards made with a wiring pencil. No CPU/computer though. Most

You can still do it old-style with no custom-made PC boards ... I actually have quite a few protoboards made with a wiring pencil. No CPU/computer though. Most complex thing is probably a serial-to-NATO (alphabet/language) board :)