What is the hexadecimal value of a ascii code?

What is the hexadecimal value of a ascii code?

Ascii code:

A to Z are respectively 65 to 90, hexadecimal is 41 to 5a

a to z are 97 to 122, hexadecimal is 61 to 7a

So the ascii code value of a The hexadecimal notation is 61.

ASCII knowledge supplement

ASCII ((American Standard Code for Information Interchange): American Standard Code for Information Interchange) is a set of computer codes based on the Latin alphabet System primarily used to display modern English and other Western European languages. It is the most common information exchange standard and is equivalent to the international standard ISO/IEC 646. ASCII was first published as a standardized type in 1967, and was last updated in 1986. So far, a total of 128 characters have been defined.

0~31 and 127 (33 in total) are control characters or communication-specific characters (the rest are displayable characters), such as control characters: LF (line feed), CR (carriage return), FF (form feed) ), DEL (delete), BS (backspace), BEL (ring), etc.;

Special characters for communication: SOH (head of text), EOT (end of text), ACK (confirmation), etc.;

ASCII values ​​8, 9, 10 and 13 are converted to backspace, tab, line feed and carriage return characters respectively. They do not have a specific graphic display, but will have different effects on text display depending on the application.

32~126 (95 in total) are characters (32 is a space), of which 48~57 are ten Arabic numerals from 0 to 9.

65~90 are 26 uppercase English letters, 97~122 are 26 lowercase English letters, and the rest are some punctuation marks, arithmetic symbols, etc.

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