a line or series of lines connecting electrical components a series of transistors, resistors, capacitors, and other electrical components colorful wires and cables a circuit board or printed circuit board a power source a microcontroller or other processor a display or indicator light
circuit which is a line or series of lines connecting electrical components circuit which is a series of transistors, resistors, capacitors, and other electrical components circuit which has colorful wires and cables circuit which is a circuit board or printed circuit board circuit which is a power source circuit which is a microcontroller or other processor circuit which is a display or indicator light