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Redenomination is the process of changing the face value of banknotes or coins used in circulating currency. ==Inflationary== In times of inflation, the same number of monetary units have continually decreasing purchasing power. In other words, prices of products and services must be expressed in higher numbers. If these numbers become excessively large, they can impede daily transactions because of the risk and inconvenience of carrying stacks of bills, or the strain on systems, e.g. automatic teller machines (ATMs), or because human psychology does not handle large numbers well. The authorities may alleviate this problem by redenomination: a new unit replaces the old unit with a fixed number of old units being converted to 1 new unit. If inflation is the reason for redenomination, this ratio is much larger than 1, usually a positive integral power of 10 like 100, 1000 or 1 million, and the procedure can be referred to as "cutting zeroes".〔 〕 Recent examples include Although the ratio is often a positive integral power of 10, sometimes it can be ''a'' where ''a'' is a single digit integer and ''n'' is a positive integer. Partial examples include Occasionally, the ratio is defined in a way such that the new unit is equal to a hard currency. As a result, the ratio may not be based on an integer. Examples include In the case of hyperinflation, the ratio can go as high as millions or billions, to a point where scientific notation is used for clarity or long and short scales are mentioned to disambiguate what kind of billion/trillion is meant. In the case of chronic inflation which is expected to continue, the authorities have a choice between a large redenomination ratio and a small redenomination ratio. If a small ratio is used, another redenomination may soon be required, which will entail costs in the financial, accounting, and computing industries. However a large ratio may result in inconveniently large or small prices at some point in the cycle. After a redenomination, the new unit is often has the same name as the old unit, with the addition of the word "new". The word "new" may or may not be dropped a few years after the change. Sometimes the new unit is a completely new name, or a "recycled" name from previous redenomination or from ancient times. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Redenomination」の詳細全文を読む スポンサード リンク
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