 
 <prompt> text: ```Wen di board no get any embedded components, e dey more correctly called printed wiring board (PWB) or etched wiring board. But, di term printed wiring board don fall out of use. A PCB wey get electronic components inside am dey called printed circuit assembly (PCA), printed circuit board assembly or PCB assembly (PCBA). IPC prefer make dem call assembled boards circuit card assembly (CCA), and for assembled backplanes make dem call am backplane assemblies. People dey informally use di term PCB for both bare and assembled boards.

At first, PCBs dey designed manually by creating a photomask on top clear mylar sheet, usually two or four times di true size. Starting from di schematic diagram, di component pin pads dey laid out on top di mylar and then traces dey routed to connect di pads. Rub-on dry transfers of common component footprints dey increase efficiency. Traces dey made with self-adhesive tape. Pre-printed non-reproducing grids on top di mylar dey help for layout. To make di board, di finished photomask dey photolithographically reproduced onto a photoresist coating on top di blank copper-clad boards.``` 

Now, provide a numbered list of answers to these questions:

1. How is the term PCB used?

Numbered answers:``` <response>: ```1. board wey get printed wiring``` 