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.
Calculator: Perhaps one of the most amazing inventions ever, almost every person is familiar with this device particularly the fact that it is used not only by mathematicians but is put into practice by almost everyone. The first calculator was created in the Late 1960s and the pocket version became available in 1970.0. Perhaps one of the most amazing inventions ever, almost every person is familiar with this device particularly the fact that it is used not only by mathematicians but is put into practice by almost everyone.