Search Results for: Electronics integrated circuits machines
screws , washers , a circuit board, speakers, etc. the screws, washers, and case may each be made of homogenous materials, but the other components comprise multiple sub-components of many different types of material. for instance, a circuit board is composed of a bare printed circuit board (pcb), integrated
circuits (ic), resistors , capacitors , switches, etc. a switch is composed of a case, a lever, a spring, contacts, pins, etc., each of which may be made of different materials. a contact might be composed of a copper strip with a surface coating. a loudspeaker is composed of a permanent magnet, copper...
https://en.wikipedia.org/wiki/Restriction_of_Hazardous_Substances_Directive