Variable width character generation and display using dot-matrix

Abstract

The fixed width character generat ion is usL>aI pract ice in the computer display system. But most of world's living languages are of complex and composite characteristics. In this regard the variable width character gener~tion and Display has significant effect on the Computer system. In our country research works in this field is in the prel iminary stage. Uti Iizing bit-mapped graphics characters of any shape may be formed. But it results in a slow and .cumbersome process. Attempts are going on to make hardware-based system. A hardware-based system alleviate this problem by scanning and addressing each dot and becomes optimized for real~-time appl ication. The present work deals with the development of hardware" basedsystem. By carefully analyzing the requirements, choosing acceptable representation scheme of characters, selecting different microprocessorbased logic modules, the system has been designed. It can handle a character of unit matrix to maxm of 8x7 matrix. Actually the coding scheme of characters determine the generation of its bit-pattern matrices. The proposed system is capable of displaying al I kinds of variable width complex and composite characters in a aesthetic and legible manner.