
Computer interfacing
(b) the second method comes to light when one looks
through the list of printer control codes. It is found that
ESC 8 will turn the paper end detector off, while ESC 9
turns it back on again. Thus, it is possible to include
these printer control codes in one's program to permit
single sheet printing when required.
This is merely one simple example of how familiarity with
the printer manual can be of great help.
Daisy-wheel printers
While the dot-matrix printer is fast and versatile, what it
lacks is ultimate quality. In the business world the latter
consideration is often far more important than being able
to draw pictures ...