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The relationship between PCB and integrated circuits
2019-12-05
 
In the process of learning electronics, we often see printed circuit boards (PCBs) and integrated circuits (ICs). Many people are "stupidly unclear" about these two concepts. In fact, they are not so complicated. Today we will sort out the difference between PCB and integrated circuit.

What is a PCB?

Printed Circuit Board (PCB), also known as printed circuit board in Chinese, is an important electronic component, a support for electronic components, and a carrier for the electrical connection of electronic components. Because it is made using electronic printing, it is called a "printed" circuit board.

The current circuit boards are mainly composed of lines and patterns, dielectric layers, through holes / vias, solder resistant inks (Solder resistant / Solder Mask), and silk screens (Legend / Marking / Silk screen). , Surface Finish, etc.

Advantages of PCB: high density, high reliability, designability, manufacturability, testability, assembly, and maintainability.

What is an integrated circuit?

An integrated circuit is a miniature electronic device or component. Adopt a certain process to interconnect transistors, resistors, capacitors, inductors and other components and wiring required in a circuit, make it on a small or several small semiconductor wafers or dielectric substrates, and then package them in a tube case , To become a micro-structure with the required circuit functions; where all the components have been integrated into a whole, making electronic components a big step towards miniaturization, low power consumption, intelligence and high reliability. It is represented in the circuit by the letter "IC".

Integrated circuits can be divided into three categories: analog integrated circuits, digital integrated circuits, and digital / analog hybrid integrated circuits according to their functions and structures.

The integrated circuit has the advantages of small size, light weight, fewer lead wires and solder joints, long life, high reliability, good performance, etc. At the same time, the low cost facilitates mass production.

The relationship between PCB and integrated circuits

The integrated circuit generally refers to the integration of chips. Like the Northbridge chip on the motherboard, the internal CPU is called an integrated circuit, and the original name is also called an integrated block. The PCB refers to the circuit board we usually see, and there are printed solder chips on the circuit board.

Understanding of the relationship between the two: the integrated circuit (IC) is soldered on the PCB; the PCB is the carrier of the integrated circuit (IC).

To put it simply, integrated circuit is a general circuit integrated into a chip, it is a whole, once there is damage inside, then the chip will be damaged, and the PCB can solder components by itself, and can be replaced if broken. .
 
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