PCB, also known as printed circuit board, is a provider of electrical connections for electronic components, and its design mainly involves layout design; The main advantage of using circuit boards is that they greatly reduce wiring and assembly errors, improve automation levels and production labor rates. The existence of PCBs has a history of over 100 years.

　　PCBA: PCBA is the entire process of SMT loading on an empty PCB board, followed by DIP plugins.

　　The differences between them include:

　　1. Different functions

　　PCBs can make programs that cannot run independently a unit that runs independently.

　　The excellent circuit design of PCBA can achieve good circuit performance and heat dissipation performance.

　　2. Essentially different

　　PCBA generally refers to a processing process, which can also be said to be a finished circuit board, that is, a PCB that is completed after processing.