information:classification, structural:scholar_edition, structural:reformatting, linguistic:paraphrasing
Electronic devices

Household electronic devices overwhelmingly use DC. This is due to the nature of basic circuit components. Many essential components in electronic devices, such as transistors, diodes, and logic gates, operate on a one-way basis; the diode, for example, only allows current to flow in one, fixed direction. Trying to use AC with such components would immensely complicate circuit design, requiring designs to function symmetrically with respect to current direction. Additionally, CPUs update millions of times per second, much faster than the mere 100/120 times per second that AC alternates polarities. This would cause massive inconsistencies in CPU voltage and performance, meaning all devices that use CPUs must also use DC.

There are, however, devices that are indifferent to current type due to incredibly simple functionality. These devices, such as incandescent lightbulbs or some toaster ovens, operate by running current through high resistance elements, emitting EM radiation. Both AC and DC is affected by resistance, so the current type used is irrelevant, although both types may need to use different voltages to produce identical results.