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SiriusHardware · 27th Feb 2020, 10:38 pm

Thanks for taking the time to post this information, very useful. If at least two of the major optoelectronics manufacturers used it, then maybe this pinout was an established standard. I wonder how the odd / jumbled order of segment connections came about?

My MK14 is in storage so I can't check its original display just now but the display is highly likely to have been a Nat Semi part as the kits of parts for the MK14 were supplied to Science Of Cambridge by National Semiconductor.

The other 9-digit display I originally pulled from a Texet 880 calculator (and which I know works in the MK14) is a NSA1488.

27th Feb 2020, 10:38 pm	#262
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,560	Re: MK14 schematic revisions Thanks for taking the time to post this information, very useful. If at least two of the major optoelectronics manufacturers used it, then maybe this pinout was an established standard. I wonder how the odd / jumbled order of segment connections came about? My MK14 is in storage so I can't check its original display just now but the display is highly likely to have been a Nat Semi part as the kits of parts for the MK14 were supplied to Science Of Cambridge by National Semiconductor. The other 9-digit display I originally pulled from a Texet 880 calculator (and which I know works in the MK14) is a NSA1488.