A populated pcb from the 1980s.
Note the large number of discrete components.
A populated pcb from the 1980s.
Note the large number of connecting wires.
A populated pcb from the 1990s.
Note the microprocessor controller.
A thick film Integrated Circuit.
The pcb of a calculator.
Note the thin connections and the processor.
A modern pcb.
The pcb of a laptop ~2000.