In the United States, milk products have to be listed as a potential allergy warning if the food contains them. Most manufacturers will individually include whey in the ingredient list as well, particularly if the product is not strictly considered a dairy product.
1960's Sowing the seeds of the calculator revolution. Early 1960's -- Mechanical calculators, slide rules, or paper and pencil are the world's main methods of calculation. As was true in the 1940's and 1950's, early 1960's calculators are complicated motor-assisted mechanical adding machines with no other electronic parts.
In fact, electronic calculators are so widespread now that it's hard to believe they didn't become commonplace until the late 20 th century. Before the invention of the modern calculator, people used some other tools for computation. The abacus, for example, is one ancestor of the calculator.