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 small pins. Each pin creates a dot, and by controlling which pins strike, the printer can form characters and graphics. This technology is often used for printing multi-part forms, such as invoices and receipts. 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 and laser printers, they remain useful in specific applications where continuous forms or multipart printing is required.