What does dot matrix mean? Dot matrix printers were the dominant form of computer printer for around 20 years. Although they are largely obsolete today, they do still have niche uses. For example, if you get a paper paycheck, it’s probably printed with a dot matrix printer.
Dot matrix printing gets its name from the technique it uses. It defines a rectangular matrix consisting of dots, usually nine or 24 dots across. The fewer dots in the matrix, the more noticeable the gap between the dots, resulting in crude looking letters. The text is recognizable, but looks very much like it was printed by a computer.
David Farquhar is a computer security professional, entrepreneur, and author. He has written professionally about computers since 1991, so he was writing about retro computers when they were still new. He has been working in IT professionally since 1994 and has specialized in vulnerability management since 2013. He holds Security+ and CISSP certifications. Today he blogs five times a week, mostly about retro computers and retro gaming covering the time period from 1975 to 2000.
