This document provides information about dot matrix printers. It consists of 3-4 sentences describing how dot matrix printers work by punching ink onto paper in patterns of dots to form letters, with each letter made up of its own dot pattern, usually 7 dots vertically. An example is given of the dot pattern for the letter H. Dot matrix printers are used in applications like railways, cash receipts, and paper works where print quality is not the primary concern.

1. KHUSHI SAINI
170305110015
AGRICULTURAL
ENGINEERING
7TH SEM / 4TH YEAR
MACHINE DESIGN AND
COMPUTER GRAPHICS

2. •Punches ink onto the paper, like a type writer.
•Uses patterns of dots to make letters.
•Letter are made up of there own patterns.
•Usually 7 dots vertically , but variation have been observed.
For example:-
H has 7 dots in first column ,two dots in
position 4 , then 7 dots for the final part.
USED:-
Railways
Cash receipt
Used where quality doesn’t
matter
Paper works