Dot matrix printers print characters by punching dots in a pattern onto paper like a typewriter. Each character is made up of a specific dot pattern, with letters like H having 7 dots in the first column, 2 in the fourth column, and 7 in the last column. While dot matrix printers are the cheapest per page for printing, they have cons of only printing one character at a time, very low resolution, and poor printing speed.

1. Dot Matrix Printers

2. DEFINITION
Punches ink onto the paper, like a typewriter.
Letters are made up of patterns.

3. How it works ?
Each character has a map of dots that are
printed.
For example H has 7 dots in the first column,
two dots in position 4 for the next two, then 7
dots for the final column.

4. CONS
1) Prints only one character at a time
2) Very low resolution
3) Poor Printing speed.

5. PROS
The cheapest per page method for printing.