Severe zinc deficiency is a rare, genetic or acquired condition. Dietary zinc deficiency, often called marginal zinc deficiency, is quite common in the developing world, affecting an estimated 2 billion people. (More information) The RDA for adult men and women is 11 mg/day and 8 mg/day of zinc, respectively.
Output is defined as the act of producing something, the amount of something that is produced or the process in which something is delivered. An example of output is the electricity produced by a power plant. An example of output is producing 1,000 cases of a product.
A special type of input device that stores pictures digitally and then transfers them to the computer's memory - This can also be output, since this device has a small monitor to show the image - Input and Output.