PC/104[0] was enormously popular for embedded systems, it consisted a stack of cards sharing an ISA bus (later PCI and PCIe). [0] https://en.wikipedia.org/wiki

PC/104[0] was enormously popular for embedded systems, it consisted a stack of cards sharing an ISA bus (later PCI and PCIe). [0] https://en.wikipedia.org/wiki/PC/104 https://en.wikipedia.org/wiki/PC/104