Professor David Ackley of the University of New Mexico designed the original modular motherboard that connects with its counterparts in unlimited quantities.
Each module has its own 72 MHz ARM processor, 128 KB EEPROM memory and 16 KB SSD. ')
Hot plugging is supported, that is, new modules can be added and they start working without powering down. The failure of one module does not affect the work of the rest.
The design was equipped with a variety of multi-colored LEDs that glow wonderfully in the dark (see video), and the motherboard itself was named Illuninato X Machina.
It is difficult to say in which area such iron can be used. Apparently, this experiment is purely academic interest. Such a design, for example, can be used as an illustration in lectures on computer architectures.
You can buy a set of 4, 9 or 16 Illuninato X Machina modules here for about $ 57 each.