Evolution
The cleaning card has evolved with the equipment they need to clean. A good example is the bill acceptor. Initially, the bill acceptor was designed for vending machines as a means of selling candy to the public. It includes a device that recognizes that a US one dollar bank note has been inserted. The cleaning card was required to be the same shape as US currency in order to be accepted into the device to clean it. Vending machines began accepting higher denominations as well as having the ability to make change. Specialized sensors were introduced into the bill acceptors to recognize multiple denominations and to only accept media that contained bank note characteristics. The bill acceptor cleaning card was redeveloped to contain magnetic ink and bank note characteristics so as to be accepted by the equipment. The development of bill acceptors for slot machines in the gaming and casino industry required the bill acceptor to be more sophisticated. The bill validators needed to validate currency of multiple denominations up to a one hundred dollar bank note. Fraud was now a critical issue and was addressed by multiple sensors and optics throughout the inserted currency pathway. These sensors and optics were recessed so as to keep currency from running across them with each insertion and wearing down sensitive lenses.
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Famous quotes containing the word evolution:
“The evolution of humans can not only be seen as the grand total of their wars, it is also defined by the evolution of the human mind and the development of the human consciousness.”
—Friedrich Dürrenmatt (1921–1990)
“By contrast with history, evolution is an unconscious process. Another, and perhaps a better way of putting it would be to say that evolution is a natural process, history a human one.... Insofar as we treat man as a part of nature—for instance in a biological survey of evolution—we are precisely not treating him as a historical being. As a historically developing being, he is set over against nature, both as a knower and as a doer.”
—Owen Barfield (b. 1898)
“Analyze theory-building how we will, we all must start in the middle. Our conceptual firsts are middle-sized, middle-distanced objects, and our introduction to them and to everything comes midway in the cultural evolution of the race.”
—Willard Van Orman Quine (b. 1908)