The power supply IC refers to the pulse width control integration of the switching power supply, and the power supply depends on it to adjust the stability of the output voltage.
The main chip refers to the south and north bridge chip on the motherboard, in addition to the CPU on the motherboard the most important number of the south and north bridge chip, the motherboard chipset almost determines all the functions of the motherboard, which the type of CPU, the motherboard's system bus frequency, memory type, capacity and performance, graphics card slot specifications are determined by the chipset in the north bridge chip; The type and number of expansion slots, the type and number of expansion interfaces (such as USB2.0\/1.1, IEEE1394, serial port, parallel port, VGA output interface of the notebook), etc., are determined by the chipset's south bridge.
Some motherboards on the north-south bridge chip integration, only one chip. PCB is the printed circuitboard (Printedcircuitboard, PCB) will appear in almost every electronic device. If there are electronic parts in a certain device, they are also mounted on PCBS of different sizes.
In addition to fixing various small parts, the main function of the PCB is to provide electrical connections between the above parts. As electronic equipment becomes more and more complex, more and more parts are needed, and the lines and parts on the PCB are becoming more and more dense. A standard PCB looks like this ---- computer motherboard.
The substrate of the board itself is made of an insulating, non-bendable material.
The small wire material that can be seen on the surface is copper foil. Originally, the copper foil is covered on the whole board, and the middle part is etched away during the manufacturing process, and the remaining part becomes a network of small lines.
These lines are called conductors (conductorpattern) or wiring, and are used to provide circuit connections for parts on the PCB.