The first microphone was a telephone transmitter invented by Emile Berliner for Alexander Graham Bell in 1876. The invention of radio, spurred the invention of better quality broadcasting microphones.
The computer is another good example of a complex invention that required the energy of many inventors to create. In fact, the computer is actually a collection of many different inventions.
Lee Fleming and Olav Sorenson describe the process in their article The Dangers of Modularity, "Start with a simple premise: Inventions result from the combination of components (either physical things or ideas) in new and useful ways. As a gross simplification, one might think of the automobile as an amalgamation of various preexisting parts, including the steering wheel and gears of a bicycle; the wheels, axles, and general structure of a horse-drawn carriage; and the internal combustion engine. The interdependence of the components has an enormous effect on the pace and complexity of the innovation process."
Illustration Mary Bellis - Microphone used in Alexander Graham Bell's telephone.