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.
1 Calculator is nothing but a tiny electronic device used for calculating arithmetic operations like addition, subtraction, multiplication and division. 2  The first digital calculators were invented by Blaise Pascal and he worked for three years on the calculatorâs that is from 1643 to 1645.