Convert characters and text blocks into their corresponding ASCII numerical codes in decimal, hex, or binary formats.
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ASCII (American Standard Code for Information Interchange) is a character encoding standard for electronic communication. Standard ASCII codes represent text in computers, telecommunications, and other devices. It assigns numerical values (0 to 127) to English letters, numbers, punctuation marks, and control characters. For example, the uppercase letter **A** is represented by the decimal value **65**, or hex **41**, or binary **01000001**.