The measurement quoted in dB describes the ratio (10 log power difference, 20 log voltage difference, etc.) between the quantity of two levels, the level being measured and a reference.
Alt Codes for Bracketing ; Alt Code Symbol Description Alt 40 ( Open Bracket Alt 41 ) Close Bracked Alt Codes for Degree of Accuracy ; Alt Code Symbol Description Alt 241 Â± Plus or Minus Alt Codes for Fractions ; Alt Code Symbol Description Alt 47 / Fraction seperator
Alt Code: The Alt code is probably the quickest and most efficient way to produce a special character. Hold the Alt button on your keyboard, type the specified number (on the numeric keypad), and let go of Alt. This works in most word processors, and Alt codes using numbers less than 256 will work on most web pages. (back to top) Character Code: The character code is the hexidecimal code that is assigned to every character, including regular characters. It can also be used in Microsoft Word to produce special characters. Type the character code for a character, and then hold Alt and press X.