Ultimate HTML Entities and Character Reference Cheat Sheet. The HTML entities that can be rendered using the numeric and character reference values are listed here. These characters are normally reserved in the HTML code.
Binary Conversion Table to Dec, Hex, Oct Cheat Sheet Binary Conversion Table to Dec, Hex, Oct Cheat Sheet. The Decimal (base 10) system has ten possible values (0,1,2,3,4,5,6,7,8, or 9) for each place-value. In contrast, the Binary (base 2) system has only two possible values, digits represented as 0 or 1, for each place-value.