Simple printed circuit board

　　A simple printed circuit board is a type of circuit board with a relatively simple structure, usually consisting of only one or two layers. This type of circuit board is mainly used in some low-frequency, low-speed, low-power electronic devices, such as remote controllers, calculators, simple sensors, etc.

　　When designing a simple printed circuit board, engineers usually only need to focus on basic circuit connections and component layout. Due to the small number of layers and relatively simple wiring, there is no need to consider complex signal integrity and power management issues. This not only reduces design difficulty, but also lowers manufacturing costs and cycles.

　　The process of manufacturing a simple printed circuit board is similar to that of a regular multilayer board, but the steps are relatively simplified. Firstly, transfer the circuit pattern onto the copper-clad laminate using photosensitive resin. Next, the pattern is cured through exposure and development processes. Then, use etching solution to remove excess copper foil and preserve the desired circuit path. Finally, the electronic components are fixed onto the circuit board through drilling and welding processes.

　　Due to its simple design and low cost, simple printed circuit boards have been widely used in some low-cost, low performance electronic products. Nevertheless, they remain an important component of modern electronic technology, providing basic electrical connections and functional support for various devices.