What is a pcb ？
pcb, also known as pcbs (printed circuit boards), electrical connection of electronic components provider. With development over 100 years of history,it is designed mainly to layout; The main advantage of using circuit board layout and assembly are greatly reduced errors, improved the level of automation and production labor rate.
The inventor of pcb is Austrian Paul Luoaisile (Paul Eisler), he used pcbs in a radio device in 1936. In 1943, Most of Americans using the technology within the military radio. In 1948, the United States formally recognized the invention for commercial purposes. Since the mid-50s of the 20th century, pcb technology began to be widely adopted. Before the appearance of the pcb, electronic components are to rely on the interconnection between the wire and direct connections to achieve. Now, the circuit bread board is as an effective experimental tool exists, pcb in the electronics industry has occupied the position of absolute rule.
pcb design is based on circuit picture (pcb assembly)shows the basis for the circuit designer to achieve the functionality required. pcb design layout mainly refers to the need to consider the layout of the external connections, internal electronic components of the optimal layout, interconnect and via optimization of the layout, electromagnetic protection, heat dissipation and other factors. Good layout can save production costs, achieve good circuit performance and heat dissipation. Simple layout can be achieved by hand, require complex layout using computer-aided design (CAD) to achieve.