What Is the Main Printed Circuit Board in a Computer?

What Is the Main Printed Circuit Board in a Computer?

The main printed circuit board in a computer, also known as the MoBo, serves many functions. It is the central piece of the computer, and its main function is to allow different parts of the system to communicate. This is accomplished by utilizing “buses,” which are copper traces that run across the PCB. The MoBo usually contains the CPU, which is typically located in the center.


A computer motherboard, or “motherboard”, is a rigid flat board that contains electronic components and interconnects them via copper pathways. The motherboard is usually the main PCB in a computer, but it can also refer to smaller boards that plug into slots on the main board, such as an expansion card or a flexible circuit board.

The motherboard supports all other computer components, and it contains the circuits that allow devices to communicate with each other. The motherboard also has slots for various components, including the processor and the memory. Almost all computers have a motherboard, and they connect the various parts and peripherals to each other.

The CPU is installed on the motherboard and is connected to it through a connector known as a socket. The CPU socket is responsible for providing mechanical and electrical connections and enables installation without soldering. The CPU socket also contains the processor’s BIOS, or basic operating system, which is the first software to run on a PC system board.

Single-sided PCB

A single-sided printed circuit board, or PCB, is an electronic circuit board with conducting wires on one side and components mounted on the other side. These circuit boards are the most common and are widely used in a wide variety of electronic devices, such as computers, printers, radio equipment, calculators, and more. Because they are relatively simple to manufacture, they are ideal for low-density designs. Moreover, single-sided PCBs can be procured at lower prices when purchased in large quantities.

Single-sided PCBs should be designed with high-quality software and verified by a professional before fabrication. Moreover, they should be protected from excessive heat, dust, or humidity. In addition, the PCB should be used in a suitable environment and periodically checked to ensure that it is functioning properly. Exposure to high-level contaminants, poor solder joints, or unsuitable material may result in a board failure.

When you’re ready to place an order for a single-sided PCB, you must first know what size of board you’ll need. Once you have done that, you can start searching for a reliable supplier or manufacturer. Once you’ve located a suitable manufacturer, you should contact them and make an order. When you place your order, don’t forget to specify the quantity, payment method, and mode of transport.


Resistors are the basic building blocks of computer circuits. They are used in a variety of applications to control current. They are also used to dissipate heat. The power rating of a resistor is specified in physical units called “watts.” Typically, resistors in computers and other small electronics are rated at less than a quarter of a watt. Although resistor size is not directly related to power rating, it is a convenient way to see its effect on power dissipation.

Electrons find it difficult to move through a thin wire, which limits their flow through the resistor. The amount of electrons flowing through a resistor decreases as the wire is longer and thinner. Resistors have many applications, but the most common are in resistor-capacitor networks.

Inductors are also two-terminal, linear passive components of PCBs. These two-terminal devices store electrical energy by using magnetic fields. They are also known as chokers, reactors, and coils. They typically consist of a core surrounded by insulated wire. The more wire that wraps around the core, the higher the magnetic field. Inductors also contain windings, which amplify the magnetic field.

Copper thickness

Copper thickness is one of the most important considerations when creating a PCB. The thickness of the copper base material determines the overall conductivity and efficiency of the PCB. Copper thickness is measured in ounces per square foot, and can range from 0.5 to 2 ounces for different PCBs.

Thicker copper is more expensive than thinner copper, and it also requires more process engineering and quality assurance. Additionally, thicker copper can have a negative effect on the thermal profile of the board. It can significantly increase the amount of heat that is absorbed during the reflow stage. Thicker copper is more difficult to etch, and can result in unacceptably uneven sidewalls and undercutting of the copper. Fortunately, specialized etching and plating techniques have made it possible to eliminate these problems.

The thickness of the PCB’s copper varies based on the configuration and construction sequence used. Two-layer circuits are usually 1.6mm thick, while four or six-layer multilayers can vary between 2.6mm and 5.5mm. Moreover, varying thickness is possible due to metallization, mechanical requirements, or characteristic impedances. Generally, printed circuit boards have two or three prepregs, which are glass fiber fabrics filled with resin and pressed together.

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