Pin-Through-Hole (PTH) is an older method of fusing relatively low-density electrical components to one side of a printed circuit board substrate, utilizing pin-through-hole connections.

Printed Circuit Board (PCB) is a board made from an insulating, non-conductive material that has conductive metal tracks (electronic interconnects) called traces on it. Integrated circuits and components are soldered to the board, and the metal traces between terminals connect the various devices and components. Multilayer circuit boards consist of multiple laminated layers of electrically integrated substrate, each with unique circuit traces.

Product Assembly and Test is the process of placing components on printed circuit boards through surface mount and through-hole technologies. Printed circuit boards undergo various types of testing throughout the process to ensure the highest reliability and functionality of the product.
Product Assurance guarantees that the product is built according to specifications and meets all standards and regulations.

Prototyping is an element of new product introduction, which involves building initial quantities, in short production runs, of an electronic product for testing, as well as for design validation and manufacturability refinement. The prototyping process involves nearly all aspects of a product prior to volume production and can significantly streamline the design and product development process, while substantially reducing costs.