What is this? by Dawn Wright | Dec 20, 2013 Anybody besides me ever use one of these in college? Or these? 1 Comment dawn67 on December 22, 2013 at 3:59 pm I guess that means “no.” Perhaps I’m the only dinosaur from college in the ’60s? The top image is a sliderule or “slipstick” which engineers pre-1970 used extensively. With one you can calculate just about any function that Excel does today. The lower image is a punch card which was used to input code and data into early computers. Reply Leave a Reply Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed.