2 layers100 × 100 mmHC MemoryBoardnasu8151/HC4Schematics and board of HC4 E (E means "for Education").607 parts8
2 layers100 × 100 mmHC4 KiCadnasu8151/HC4Schematics and board of HC4 E (E means "for Education").175 parts8
2 layers100 × 100 mmHC4 KiCad EEnasu8151/HC4Schematics and board of HC4 E (E means "for Education").125 parts8