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计算机辅助设计技术是计算机应用的重要发展,是计算机科学的一个重要组成部分。电路分析的专用语言是模拟电路的计算机辅助设计或辅助分析技术(简称为CACD和CACA)的基础。 电路分析语言ECAL是利用FORTRAN语言对语句进行解释执行的一种比较简单,而使用又比较方便的电路分析专用语言,它能对电路进行直流分析、交流分析和暂态分析,而且直流分析的结果可以直接作为交流或暂态分析的初始条件而转入交流或暂态分析。 ECAL语言用接近电路工程人员习惯的输入语句来描述电路,允许使用的元件除常规线性的如电阻、电容、电感、电流源、电压源等以外,还允许使用二极管、晶体三极管和非线性电阻等非线性元件,因此它可以对线性或非线性电路和系统进行分析。 ECAL语言用简单的输出语句来控制分析结果数据的输出形式,它可以是表格、也可以是图形以适应不同的需要。因此它对于工程技术人员来说是一种很有用的分析工具。
Computer-aided design technology is an important development of computer applications, is an important part of computer science. The language specific to circuit analysis is the basis for computer-aided design or ancillary analysis techniques for analog circuits (CACD and CACA for short). Circuit Analysis Language ECAL is to use FORTRAN language to explain the statement to perform a relatively simple and easy to use circuit analysis language, it can be DC circuit analysis, exchange analysis and transient analysis, and the results of DC analysis It can be directly used as an exchange or transient analysis of the initial conditions into the exchange or transient analysis. The ECAL language describes circuits using input statements that circuit engineers are used to and allows the use of components that allow the use of diodes, transistors, and non-linear resistors in addition to the usual linearities such as resistance, capacitance, inductance, current source, voltage source, etc. Nonlinear components, so it can be linear or nonlinear circuits and systems for analysis. The ECAL language uses simple output statements to control the output of the analysis result data, which can be either tables or graphics to suit different needs. So it is a very useful analytical tool for engineers and technicians.