信息技术《计算机应用基础》第一章 计算机与信息处理ppt

1、Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science 1234Nanjing Normal Univ. Dept. of Computer Science 5678Nanjing Normal Univ. Dept. of Computer Science 91011Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanji

2、ng Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. De

3、pt. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Sc

4、ience Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science 通道通道：视觉听觉嗅觉触

5、觉味觉：视觉听觉嗅觉触觉味觉比例比例：8080+ + % 10 % 3.5 % 1.5 % 1 % 10 % 3.5 % 1.5 % 1 %效果效果：20 % 30 %20 % 30 % 50 % 50 % 了解Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science 感觉媒体感觉媒体，即能使人类听觉、视觉、嗅觉、味觉和触觉器官直接产生感觉(感知信息内容)的一类媒体，如声音、文字、图画、气味等，它们是人类有效使用信息的形式。Nanjing Normal Univ.

6、Dept. of Computer Science （Attributes of perception medium）（1 1） 感觉媒体的表示值感觉媒体的表示值: : determine thdetermine the information representation of diffe information representation of different media.erent media.例如：例如： texttext（文本）由一系列句子组成，文本）由一系列句子组成，句子由一串字符组成。句子由一串字符组成。 语言由一系列句子组成，句子由语言由一系列句子组成，句子由一个连续的（

7、压力）波形组成。一个连续的（压力）波形组成。Nanjing Normal Univ. Dept. of Computer Science to be considered as part of the presentation media of information output.例如：视觉信息的表示空间是纸和屏幕。屏幕一般是二维的，立体显示则是三维。 听觉信息的表示空间是喇叭（音箱）。 声音是一维、二维或多维的（Attributes of perception medium）Nanjing Normal Univ. Dept. of Computer Science 表示媒体表示媒体：为了

8、使计算机能有效地加工、处理、存储、传输感觉媒体而在计算机内部采用的特殊表示形式，即声、文、图、活动图像等的二进制编码表示。Nanjing Normal Univ. Dept. of Computer Science 存储媒体存储媒体：用于存放表示媒体以便计算机随时加工处理的物理实体，如磁盘、光盘、半导体存储器等。Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science CP

9、UOutputDeviceStorageInputDevice表示媒体表示媒体存储媒体存储媒体展现媒体展现媒体展现媒体展现媒体媒体传输传输媒体媒体表示媒体表示媒体Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science 1. 计算机按主机所用主要元器件可分为哪 几代？每代的特征是什么？2. 什么是数据？计算机系统中的数据采集 采用什么形式表示？3. 什么是信息？什么是计算机

10、信息处理？Nanjing Normal Univ. Dept. of Computer Science 4. 什么是媒体？什么是多媒体？5. 计算机信息处理的主要特点有哪些？6. 试举例说明计算机的应用Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Nor

11、mal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of

12、 Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ.