TDa machine connected to a computer that prints letters, numbers etc using many small dots 点阵式打印机
Examples from the Corpus
dot-matrix printer• As the name implies, a dot-matrix printer uses patterns of dots printed within a rectangular matrix to generate individual characters.• The first four horizontal sections printed on a dot-matrix printer using continuous stationery.• But if it's to a dot-matrix printer, the quality will be so low, so don't spend too much.