5 ms·

BTW, I didn’t check every detail, but a card reader reading “up to 200 cards/min” sounded way wrong, as I recall it. And it is way wrong! The IBM 3505 could rea

BTW, I didn’t check every detail, but a card reader reading “up to 200 cards/min” sounded way wrong, as I recall it. And it is way wrong! The IBM 3505 could read up to 1200 cards/min.

allenrb 3y ago
Thanks! I thought 3 cards per second didn’t sound particularly fast, but I missed the punch card era. Not by a lot, mind you.
- martyvis 3y ago
  I can hear that 20Hz hum in my head right now!