This happy state of never encountering anything but 5V logic as a hobbyist has not persisted. In recent decades the demands of higher speed and lower power ... the circuits we use when ...

To make everything work, a load resistor on the 5V circuit makes the power supply think it’s hooked up to a motherboard. It’s all wrapped up in a neat slant-sided 3D-printed case that fits ...

A system that converts AC current from the wall outlet into the DC currents required by electronic circuits. A computer power supply converts ... while 3.3v and 5v are used by the chips and ...