Ken Shirriff on Twitter: "The chip is from Chris S., who is researching the IBM 3174 establishment controller. Here's the chip on the processor board. The function of this chip is uncertain; it might be a microprocessor implementing IBM's UC.5 controller ...
Dangerous Curves | The armed and dangerous Souveche! Alien B… | Flickr
PCB Design Guidelines To Minimize RF Transmissions | Hackaday