dot matrix: Word of the day for March 11, 2018
dot matrix , n : (computing) A two-dimensional array or pattern of dots used (for example, by a display device or a printer) to represent alphanumeric characters and pictures. (computing) Clipping of dot matrix printer. German inventor Rudolf Hell, who developed a dot-matrix-based teleprinter called the Hellschreiber in the 1920s, died on this day in 2002.