据日刊《JEE》1980年4月号报导,夏普公司已将用于印制电路板设计的计算机辅助设计系统(CAD)投入市场。这种系统由单片数字转换器、字符显示器,小型计算机、磁盘、磁带、控制台磁带记录器等部分组成。设计人员只需将一个近似的电路设计草图输入该系统,便可完成布线图形的设计,且能给出设计尺寸的幅度及曲线的斜率。该系统还可给出焊料、抗蚀剂、印刷符号、钻 According to the daily “JEE” April 1980 report, Sharp has put computer-aided design systems (CAD) for printed circuit board design into the market. This system consists of monolithic digital converter, character display, small computer, disk, tape, console tape recorder and other components. Designers simply enter an approximate schematic of the circuit design into the system to complete the design of the layout, giving the size of the design and the slope of the curve. The system also gives solder, resist, printed symbols, and drills