CHARACTER GENERATOR ARRANGEMENT FOR CONTROLLING THE DISPLAY OF ALPHA-NUMERIC CHARACTERS

摘要

An alpha-numeric character generator arrangement having as a character store a "read-only" memory in which characters are stored in a character format composed of a co-ordinate matrix (e.g. a 7x5 dot matrix) of discrete character elements. One aspect of the invention resides in storing the descender letters g, j, p, q and y such that those elements forming the "tail" of the descender letter are stored in character element rows which in a given row addressing sequence for the store precede the character element rows in which the remaining elements for the descender letter are stored. Another aspect of the invention resides in addressing the character element rows of the character store in a partially cyclic manner such that descender letters are read-out for display in a "lowered", correctly aligned, position in a row of displayed characters. FIGS. 6 and 8 illustrate the invention.