1. Integrated circuits are small chips that can function as amplifiers, oscillators, timers, microprocessors, or computer memory. They are made on silicon wafers that can hold hundreds to millions of transistors, resistors, and capacitors. 2. The manufacturing process involves using computer-designed construction plans and masks to precisely grow silicon crystals, cut wafers, and selectively deposit insulating and conducting layers through repeated photolithography and etching steps. 3. After components are built up layer by layer, metal wires are deposited and patterned to connect the components, forming the working circuits on the chip. Finished chips are tested before packaging and distribution.