A dot matrix printer is a type of impact printer that produces text and images by striking an ink-soaked ribbon against paper using a matrix of tiny pins. Each pin creates a dot, and by combining these dots, the printer can form characters and graphics. This technology allows for multi-part forms, making it useful in business environments. Dot matrix printers are known for their durability and ability to print on various types of media, including carbon copies. While they are less common today due to the rise of inkjet printers and laser printers, they are still used in specific applications where low-cost printing and continuous forms are needed.