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§1.问题的提出光绘图数据是光绘图的依据,光绘图数据的顺利输入是光绘图的先决条件。我们引进的精密大型光绘图系统AD—205—F,光绘图数据可以通过磁带机送入;也可通过光电机利用纸带输入;还可通过键盘输入。可是在实用过程中出现了如下情况: 1.键盘器件失效,键控程序丢失,键盘失去作用; 2.纸带输入可靠性差,纸带凿孔形成数据不方便且速度慢; 3.磁带机出过毛病,因无备份,维修期间耽误光绘工作。
§1. Raise the problem Light drawing data is the basis of light drawing, the smooth input of light drawing data is a prerequisite for light drawing. We introduce the AD-205-F precision large-scale light-plotting system. The light-plot data can be input by the tape drive, the paper-tape input by the photoelectric machine, and the keyboard input. But in the practical process appeared the following situation: 1 keyboard device failure, the key program is lost, the keyboard loses its function; 2 the tape input reliability is poor, the paper tape punctures forms the data inconvenient and the speed is slow; Excuse me, because there is no backup, maintenance of painting during the delay.