Since the first microcomputer was produced in 1969 by Intel Corporation to support the functions of an intelligent terminal, the complexion of digital computers has changed radically. Microcomputers have been successfully applied to a wide variety of dedicated tasks requiring relatively slow calculation speeds and limited numeric accuracy.
However, little has been done to bring the LSI microprocessor into stand alone interactive graphics systems. This has been so probably because of the large data files and rapid computation speeds demanded by most interactive graphics applications. This paper outlines a hardware and software configuration for a microcomputer based graphics system developed in response to a need in the sewing industry for a low cost pattern digitizer.
A basic graphics package was written which renders both text and vectors on the storage terminal. Around this core, an application program was organized which permits an operator to log piercing point coordinate datafrom a scaled drawing. Output is then committed to paper tape for permanent storage and PROM for control of the sewing machine. Additional features allow for graphical editing of patterns, display of stored pattern "programs" from PROM or paper tape, and merging of new and/or old patterns.
Some proof of the success of this project was documented during final checkout, where the time to reduce a drawing to formatted binary on a control PROM was improved from about one man day to a matter of minutes.
自从1969年英特尔公司生产出第一台微型计算机以支持智能终端的功能以来,数字计算机的面貌已经发生了根本性的变化。微型计算机已经成功地应用于各种要求较慢的计算速度和有限的数字精度的专用任务。 P>
但是,将LSI微处理器带入独立的交互式图形系统的工作很少。之所以如此,可能是因为大多数交互式图形应用程序需要大数据文件和快速的计算速度。本文概述了基于微型计算机的图形系统的硬件和软件配置,该图形系统是为满足缝纫行业对低成本图案数字化仪的需求而开发的。 P>
编写了一个基本的图形包,可在存储终端上同时显示文本和矢量。围绕此核心,组织了一个应用程序,该程序使操作员可以从比例图中记录穿刺点坐标数据。然后将输出输出到用于永久存储的纸带和用于缝纫机控制的PROM。附加功能允许对图案进行图形编辑,从PROM或纸带显示存储的图案“程序”,以及合并新的和/或旧的图案。 P>
在最终结帐期间记录了该项目成功的一些证据,其中将控制PROM上的将图形还原为格式化二进制文件的时间从大约一天的工时缩短为几分钟。 P>
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