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Computing (FOLDOC) dictionary (also found in English - English (Wordnet), English - Vietnamese)
dot matrix printer
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hardware, printer A kind of printer with a vertical column
of up to 48 small closely packed needles or "pins" each of
which can be individually forced forward to press an ink
ribbon against the paper. The print head is repeatedly
scanned across the page and different combinations of needles
activated at each point.