A printed circuit board that contains a complete computer, including clock, microprocessor, RAM, flash memory, Ethernet, I/O control and sockets. A single board computer is a self-contained ...

Inside the phone or computer you are reading this story on is a fiberglass board bearing all the circuit chips, wires and other electronic components that make the device work. And every year ...

Working in Jobs' bedroom and garage, Wozniak single-handedly designed the machine's circuit boards ... the first completed system boards were sold to a local computer shop for $500 plus one ...