I don't know if you find a strange problem. The circuit on the circuit board is always winding. As we have learned mathematics, the straight line between two points is the shortest. So why are the circuits on the circuit board designed to be bent? Can't circuit board be designed straight?

First of all, we need to recognize a concept that the shorter the line is, the better the better. For a circuit board, stability comes first.

At the same time, the integrity of the signal must be maintained before the chip can work normally. For example, DDR memory module belongs to high-speed PCB. When communicating data, the eye chart should be opened. If it does not follow the rules of routing, it will directly lead to data errors. In serious cases, even the machine cannot be opened. On the green circuit board, there are different chipsets, big and small, and the frequency is different from each other. When the machine is running, circuit board requires coordination among components. Circuit board can also be forced lengthened for a short time, so that the interface synchronization signal can be upper. Seemingly chaotic, in fact, every line has been planned accurately, and has a great relationship with the clock frequency and even the hardware.

Circuit board

Why is the circuit on the circuit board always crooked? It comes down to the following three points:

1、Consider the size of electronic products. If the circuit in thecircuit board is designed as a straight line, the area of the circuit board will be increased by several times. In today's era of pursuing exquisite and small size, the smaller the area of circuit board, the better, or it will directly affect the area of electronic products. Now people's demand for electronic products is that the larger the screen, the smaller the others are, and the thinner the thickness is, the better.

2、Avoid material waste and quality problems. Incircuit boards, the circuit is bound to turn. If we design the circuit in the circuit board as a straight line, the turning angle will reach 90 degrees. Because the circuit can easily generate reflection at ninety degree turn, such a circuit board will easily be broken in the process of production. In this way, not only the waste of materials, even if the circuit board is successfully manufactured, it is also easy to produce quality problems.

3、Ensure signal integrity. Different parts are distributed on acircuit board, including various power supplies, various capacitors, resistors, etc. When each part is combined together, there will be interference with each other, so this must be taken into account in the design. With this curve wiring, the signal delay difference between the components will remain within a range, so that there will be no confusion in reading. A bad wiring will degrade the performance of the product and sometimes even affect the success rate of the product.

So, don't look at the circuit board always twists and turns to let ordinary people do not understand, but in fact contains great wisdom!