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White Propaganda |
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White propaganda does not hide its source. The  BBC used it frequently in World War II.
Its contrary is the  black propaganda that was already commonly used in ancient Rome.
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Calculator
Calculators are machines for automatically performing arithmetical operations and certain mathematical functions. Modern calculators are descendants of a digital arithmetic machine devised by Blaise Pascal in 1642. Later in the 17th century, Gottfried Wilhelm von Leibniz created a more advanced machine, and, especially in the late 19th century, inventors produced calculating machines that were smaller and smaller and less and less laborious to use.
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