The so-called \"packaging technology\" is a technology that packages integrated circuits with insulating plastic or ceramic materials.
Taking the CPU as an example, the volume and appearance we actually see is not the size and appearance of the real CPU core, but the product after the packaging of the CPU core and other components.
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Packaging is necessary and crucial for chips. Because the chip must be isolated from the outside world to prevent impurities in the air from corroding the chip circuit and causing electrical performance to decline. On the other hand, the packaged chip is also easier to install and transport. Because the quality of the packaging technology also directly affects the performance of the chip itself and the design and manufacture of the PCB (printed circuit board) connected with it, it is crucial. Packaging can also be said to refer to the shell used to install semiconductor integrated circuit chips, which not only plays a role in placing, fixing, sealing, protecting the chip and enhancing thermal conductivity, but also communicates the bridge between the internal world of the chip and the external circuit - the contact on the chip is connected to the pin of the package shell with a wire. These pins, in turn, are connected to other devices through wires on the printed circuit board. Therefore, for many integrated circuit products, packaging technology is a very critical part.
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At present, the CPU packaging is mostly packaged with insulating plastic or ceramic materials, which can play the role of sealing and improving the electric heating performance of the chip.
Encapsulation is to write code functions that you want to use in the future into a class method, and then seal those methods into the class, if you need the function in the future to call it, which will improve the code reuse rate and efficiency. For example: public class Test{public static void main(String args[]){\/\/ Create A new object A a=new A()
; \/\/ This calls a method a.b() in a class; }}\/\/ This is the class A{public void b(){System.out.println(" Call me when you need me! & # 34;) ; The above is one of the simplest encapsulation and call classes, said the wrong place, please later master pointed out.