An Integrated Circuit (IC), or "chip," is not a basic component in the purest sense, but a miniaturized collection of thousands or billions of transistors, resistors, and capacitors etched onto a tiny piece of silicon. ICs are the brains of modern devices. For example, a simple can replace hundreds of discrete components to create a blinking light. A microcontroller IC (like Arduino’s ATMega) is a small computer on a chip. To use an IC, you read its pinout diagram and connect power, ground, and input/output signals.
: Used to limit current or divide voltage. Presentations often include color code charts for identifying values. introduction to basic electronic components ppt