A Typeface in which every character occupies the same horizontal width, regardless of its natural form. A narrow i receives the same advance width as a wide m. Monospaced (also called fixed-width or fixed-pitch) designs descend from the mechanical constraints of typewriters and teletypes, where each key advanced the carriage by a uniform distance. Today they are the standard choice for source code, terminal emulators, and tabular data, where vertical alignment of characters across lines is essential. Courier and its descendants were the original digital monospaced faces; contemporary alternatives such as SF Mono, JetBrains Mono, and Fira Code add programming Ligature and improved Legibility.