Delete comment from: Ken Shirriff's blog

jan swenker said...

ken,

In the summer of 1969 these cards came available to hobbyists. My boyfriend and I each bought a box of 10 cards for 5 guilders (today 15 - 20 euros). Only the card edge was missing (for gold?). For those interested:
https://nvhrbiblio.nl/biblio/tijdschrift/Radio%20Bulletin/1969/Radio%20Bulletin%201969-06-OCR.pdf page 69.

jan swenker

Mar 4, 2021, 5:34:06 AM

Posted to Germanium transistors: logic circuits in the IBM 1401 computer