appliance beginnings circle circles circular coil coiled coils components connected connections curved curves disconnected edged edges efficiency electrical-device electrical-part electricity ends equipment exposed fixture grille heating home-appliance internal linked links metal parts patterned patterns perspectives rims round rounded serrated serrations sharp stove-top surface surfaces symmetrical symmetry technology uncovered wired angles chips circuit colored coloured communication computer data data-storage disc disk electrical electronics essential gadgetry golden hard hard-drive inside movement moving-parts panel part storage switches unwanted useless abstract art bolted cogs component decorative distinctive electronic-component fixed green grunge machinery open opened product psychedelic-colors psychedelic-colours screws teeth board circuit-board cpu diodes dusty microchip microprocessor miniature mother-board numbered numbers plastic plastics printed-circuit processor small transistors magnetic magneto-coil wires wiring background backgrounds capacitor card chip close-up closeup connection detail device digital electric electronic engineering hardware high industry information integrated macro micro modern mother motherboard network old pattern PC power science semiconductor server system tech wallpaper color colors colour colours connecting Dirt dirty no-longer-in-use numerals outdated boards circuit-boards decorated devices fusible-metal-alloy interlinked permanently-bonded printed-circuits solder solidify