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TonyDuell · 11th Aug 2019, 4:53 am

To drift slightly, I've seen PCBs (or whatever you want to call them) with one part number in the etch and a different part number in the silkscreen. Turned out that the former was the part number for the bare board, the latter for the populated board.

'Planar' board was I think an IBM-ism for what other companies refered to as a motherboard. Certainly in the PC family, expansion boards were 'adapters'.

11th Aug 2019, 4:53 am	#115
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,208	Re: When did PCB tracks become 'traces'? To drift slightly, I've seen PCBs (or whatever you want to call them) with one part number in the etch and a different part number in the silkscreen. Turned out that the former was the part number for the bare board, the latter for the populated board. 'Planar' board was I think an IBM-ism for what other companies refered to as a motherboard. Certainly in the PC family, expansion boards were 'adapters'.