主题：【文摘】图解计算机语言发展简史 -- 大卫
本图是一位外国网友将从上世纪50年代至今所出现过的所有计算机语言按其出现先后顺序和相互发展关系整理出来的一份软件发展简史流程图。
自己现在最常用的是Fortran,大学里喜欢C,C++,数据结构课上学Pascal,编译原理课学过smalltalk,高中学了点basic,其他的就一概不知了。
以前只知道它很古老。
Rational Rose
Rational Rose is an object-oriented Unified Modeling Language (UML) software design tool intended for visual modeling and component construction of enterprise-level software applications. In much the same way a theatrical director blocks out a play, a software designer uses Rational Rose to visually create (model) the framework for an application by blocking out classes with actors (stick figures), use case elements (ovals), objects (rectangles) and messages/relationships (arrows) in a sequence diagram using drag-and-drop symbols. Rational Rose documents the diagram as it is being constructed and then generates code in the designer's choice of C++, Visual Basic, Java, Oracle8, CORBA or Data Definition Language.
Two popular features of Rational Rose are its ability to provide iterative development and round-trip engineering. Rational Rose allows designers to take advantage of iterative development (sometimes called evolutionary development) because the new application can be created in stages with the output of one iteration becoming the input to the next. (This is in contrast to waterfall development where the whole project is completed from start to finish before a user gets to try it out.) Then, as the developer begins to understand how the components interact and makes modifications in the design, Rational Rose can perform what is called "round-trip engineering" by going back and updating the rest of the model to ensure the code remains consistent.
Rational Rose is extensible, with downloadable add-ins and third-party partner applications. It supports COM/DCOM (ActiveX), JavaBeans, and Corba component standards.
我以前主要写COBOL程序。这个算是Fortran的兄弟了。
不能用短信，只好在这里说了。
项目开始紧张起来了，以后大概没有多少时间到河里来了。请版主把我的“嘉宾”位子让给别人吧，也请通知铁手一下。
那个Linux系列没有完成，十分抱歉。
多谢版主和铁手的赏识。祝愿西西河天天向上。
先忙你的工作，等日后有空了在上来设坛开讲。
Take care！