IBM 5150 Manual To Operations page 59

Introduction
Your new IBM 80 CPS Matrix Printer works well with virtually any
computer that uses a parallel interface. Your new Printer is a highly
versatile printer featuring 80 CPS bi-directional printing, and accepts
the 96 ASCII codes for characters and symbols, and 64 graphic code
patterns.
Characters can be printed in any desired size; enlarged, condensed,
emphasized and normal (etc.). All these characters and symbols may
be printed on single or multi-part forms in widths of 4" to 10".
The brains of your IBM 80 CPS Matrix Printer is a one chip
microprocessor that controls all the functions of hardware and
software that are at your disposal.
Printer
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