ASCII 42 — *

The asterisk serves multiple critical roles across computing and mathematics. In arithmetic, '*' is the multiplication operator in virtually every programming language. In C, '*' declares pointer types and dereferences pointers — two of the most powerful and error-prone features of systems programming. In glob patterns and regular expressions, '*' is the wildcard matching zero or more characters or repetitions. In Markdown, asterisks create bold (**text**) and italic (*text*) formatting. The double asterisk '**' means exponentiation in Python and recursive globbing in shells.

Symbol characters in ASCII include mathematical operators, logical notation, and special-purpose marks that serve critical roles across programming, mathematics, and digital communication. Symbols are heavily context-dependent — the same character may act as an arithmetic operator in one language, a regex metacharacter in another, and a shell configuration flag in a third context. This contextual polyvalence makes symbols among the most functionally overloaded characters in computing, requiring careful attention to their meaning in each domain.

In the ASCII encoding table, Asterisk is assigned code point 42 in decimal (0x2A hexadecimal, 052 octal, 00101010 binary). The 7-bit ASCII standard, first published in 1963 by the American Standards Association, defines exactly 128 characters that remain the foundation of text encoding systems worldwide. UTF-8, the dominant encoding on the modern web, is fully backward compatible with ASCII — every ASCII character is encoded as the identical single byte in UTF-8, guaranteeing that Asterisk works reliably across all operating systems, programming languages, and internet protocols.