Dot Density

Some articles on dot, dot density:

Dot Matrix Printing - Uses - Personal Computers
... In the 1970s and 1980s, dot matrix impact printers were generally considered the best combination of expense and versatility, and until the 1990s they were by far the most common form of ... The MX-80's low dot density (60dpi horizontal, 72dpi vertical) produced printouts of a distinctive "computerized" quality ... to the crisp typewriter quality of a daisy-wheel printer, the dot-matrix printer's legibility appeared especially bad ...