Coins of Turkey eurozone since a number of vending machines at the time accepted the 1 new Turkish lira coin as a €2 coin. Since €2 is worth roughly four times more, vending machines affected had to be upgraded at the expense of their owners. From 1 January 2009, the "new" was removed from the second Turkish lira, its official name in Turkey becoming just "Turkish lira" again; new coins without the word "yeni" were introduced in denominations of 1, 5, 10, 25, 50 kuruş and 1 lira. Also, the inner and outer alloys of the 50 kuruş and 1 lira coins were
Decimal separator In the Middle Ages, before printing, a bar ( ¯ ) over the units digit was used to separate the integral part of a number from its fractional part, e.g. 995 (meaning, 99.95 in decimal point format). This practice derived from the decimal system used in Indian mathematics and was popularized by the Persian mathematician Al-Khwarizmi, when Latin translation of his work on the Indian numerals introduced the decimal positional number system to the Western world. His "Compendious Book on Calculation by Completion and Balancing" presented the first systematic solution of linear and quadratic equations in Arabic. A similar notation