Science - Circuit Board Of An Comupter!

Circuit Board... What do we know about Circuit Board??

Hmm... It's a closed path through which sn electric flows or may flow. A Power source that is connected to two or more components eg. light bulbs, or computer circuits They are called a series of circuits.

Printed Circuit Board (PCB) Build - Up

PCBs are made of multiple layers of Core, Prepreg,  and Copper Foil.

Core:

There are 2 types of Core. 

One is things made out of metal on the Circuit Board or PCB.

  

Second is Core that is used in PCB, underneath the Core they have whole bunch of threads that receives instructions and performs the calculation.

Prepreg:

Prepreg is a Carbon Fiber that is used to stick the core layers together.

How does Circuit Works Or PCB??

In our bodies, our heart produces the pressure to make the blood circulate, a generator or battery produces the pressure or force to push electrons around the circuit board. In our body Walls of blood vessels impede the flow and the smaller the blood vessel, the more resistance to flow. Some of the pressure produced by our heart is just for pushing blood through the blood vessel. As electrons move through wires, they bump into atoms. This impedes the flow of the electrons, the wires offer resistances to the flow of the current. 

Electric circuits are composed of wires and other components like bulbs, transistors, computer chips, and motors. Wires are made out of metals called conductors that have a low resistance to current. A Chip is a tiny piece of silicon, usually around one centimeter squared. A chip may be a single transistor ( Its a piece of silicon that amplifies electrical signals or serves as an on/off switch in computer applications). 

The most important elements in an electronic circuit are the transistors. Diodes are the tiny chip of silicons that act as valves to allow current flow in only one direction. The other electronic components are passive elements like resistors and capacitors. 

Resistors look like this...

The resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. It can be used to provide a specific voltage for an active device such as transistors.

And Capacitors look like this...

Capacitors are used in charge pump circuits as the energy storage element. Capacitors are connected in parallel with the DC ( Direct Current) power circuits.

The third passive circuit element is the inductor, which stores energy in the form of a magnetic field.
An inductor/ coil or reactor is a passive two-terminal electrical component which resists changes in charges in electric current passing through it. It consists of a conductor such as wire, usually wound into a coil. The Energy is stored in a magnetic field in the coil as long as current flows. 

This Picture here...

All components are through-hole mounted, they are placed on top of the board, their electrical connections ( the legs) pushed through holes in the PCB, and then soldered from the bottom of the board. There are two thicknesses of track the thin tracks used for signals requiring little current flow, and the thicker tracks are used for the component power supply a positive or negative that requires a great current flow.

This a computer MotherBoard↑↑↑
And This is a Laptop MotherBoard↓↓↓