可视程序设计及其认知意义

传统的程序设计以一维文本表示法为基础，迎合了现行的串行机器的内部表示法，但不易于使用．可视程序设计是一种新的程序设计范型，为用户以二维或多维方式描述和表现程序提供各种环境和工具。可视程序设计主要沿着两个方向发展：可视环境和可视语言．本文试图对可视程序设计作一综述，并从视觉思维、意象表达、人类表达工具等方面讨论它的认知意义和发展前景，还简介了笔者设计实现的一个Ｐａｓｃａｌ程序可视执行环境原型．

VISUAL PROGRAMMING AND TTS COGNITIVE ASPECTS

Traditionally , programming is based on one-dimensional , textual representations and is geared tothe prevailing serially executing machines but not easy to use. Visual programming is a newparadism. It provides environments and tools for the user to specify and to animate a program ina twa- (or more- )dimensional fashion. The progression of visual programming follows mainly twodirectiope, visual environment and visual language. This paper surveys visual programming, anddiscusses its cognitve aspects in visual thinking, image conveyance and human expression. Alsopresented is the prototype of visual environment for executing a Pascal program by the author.