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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク American Cryptogram Association ： ウィキペディア英語版 American Cryptogram Association The American Cryptogram Association is an American non-profit organization devoted to the hobby of cryptography, with an emphasis on types of codes, ciphers, and cryptograms that can be solved either with pencil and paper, or with computers, but not computer-only systems. ==History== The ACA was formed on September 1, 1929. Initially the primary interest was in monoalphabetic substitution ciphers (also known as "single alphabet" or "Aristocrat" puzzles), but this has since extended to dozens of different systems, such as Playfair, autokey, transposition, and Vigenère ciphers. Since some of its members had belonged to the National Puzzlers' League, some of the NPL terminology ("nom," "Krewe," etc.) is also used in the ACA. () 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「American Cryptogram Association」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.