Paper punch reader for the Gakken Otoko no Kagaku (Adult Science) GMC-4 4-bit microcomputer kit. The reader consists of 20 micro-switches in 2 rows of 10, wired to the GMC-4 keypad via a 9-pin connector. More info can be found at my ThreeStepsOverJapan blog.
19 century lol. Thats vintage computing.
thishasgottobecrazy 1 year ago