7×5 calculators as a proportional (1×5 to 5×5) font. The disadvantage of the 7×5 matrix and smaller is that lower case characters with descenders are not practical. A matrix of 11×9 is often used to give a far superior resolution. Dot matrix displays of sufficient resolution can be programmed to emulate the customary seven-segment numeral patterns. A larger size is 5×9 pixels, which is used on many "natural display" calculators. See also Display examples Flip-disc display Fourteen-segment display Hitachi HD44780 LCD controller LED panel Sixteen-segment display The military request form source number 2. Detailed manual from SHARP Corporation. References Digital imaging