that can make devices made up of more than one material?

For example, an automobile's intricate sub-assemblies are made up of many different metal alloys, as well as plastics, rubber, glass, fabrics, and so on. I can see replicators making solid units like wheels, gears and shafts, but what about transmissions, or brake systems?

As for microprocessors, that should not be that hard. Chips have been made mass-produced by photo-reproduction 2-d printing techniques for years now. I remember in Silicon Valley our company's chips' circuits drawn by draftsmen on huge sheets of paper and then being photographed and scanned to produce the master templates for mass production of individual chips.

Essentially, each layer of a chip "sandwich" was a microfiche of a huge hand-drawn circuit.