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.
GOTTFRIED Leibniz invented the mechanical calculator after nearly four decades of the invention of the mechanical calculator. Although Leibnizâs invention was used for the next three decades, its usage began to decline as inventors began working on the digital calculator during the latter parts of the 1960s.