信息技術《計算機應用基礎》第一章 計算機與信息處理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：視覺聽覺嗅覺觸

5、覺味覺：視覺聽覺嗅覺觸覺味覺比例比例：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 感覺媒體感覺媒體，即能使人類聽覺、視覺、嗅覺、味覺和觸覺器官直接產(chǎn)生感覺(感知信息內(nèi)容)的一類媒體，如聲音、文字、圖畫、氣味等，它們是人類有效使用信息的形式。Nanjing Normal Univ.

6、Dept. of Computer Science （Attributes of perception medium）（1 1） 感覺媒體的表示值感覺媒體的表示值: : determine thdetermine the information representation of diffe information representation of different media.erent media.例如：例如： texttext（文本）由一系列句子組成，文本）由一系列句子組成，句子由一串字符組成。句子由一串字符組成。 語言由一系列句子組成，句子由語言由一系列句子組成，句子由一個連續(xù)的（

7、壓力）波形組成。一個連續(xù)的（壓力）波形組成。Nanjing Normal Univ. Dept. of Computer Science to be considered as part of the presentation media of information output.例如：視覺信息的表示空間是紙和屏幕。屏幕一般是二維的，立體顯示則是三維。 聽覺信息的表示空間是喇叭（音箱）。 聲音是一維、二維或多維的（Attributes of perception medium）Nanjing Normal Univ. Dept. of Computer Science 表示媒體表示媒體：為了

8、使計算機能有效地加工、處理、存儲、傳輸感覺媒體而在計算機內(nèi)部采用的特殊表示形式，即聲、文、圖、活動圖像等的二進制編碼表示。Nanjing Normal Univ. Dept. of Computer Science 存儲媒體存儲媒體：用于存放表示媒體以便計算機隨時加工處理的物理實體，如磁盤、光盤、半導體存儲器等。Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science CP

9、UOutputDeviceStorageInputDevice表示媒體表示媒體存儲媒體存儲媒體展現(xiàn)媒體展現(xiàn)媒體展現(xiàn)媒體展現(xiàn)媒體媒體傳輸傳輸媒體媒體表示媒體表示媒體Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science Nanjing Normal Univ. Dept. of Computer Science 1. 計算機按主機所用主要元器件可分為哪 幾代？每代的特征是什么？2. 什么是數(shù)據(jù)？計算機系統(tǒng)中的數(shù)據(jù)采集 采用什么形式表示？3. 什么是信息？什么是計算機

10、信息處理？Nanjing Normal Univ. Dept. of Computer Science 4. 什么是媒體？什么是多媒體？5. 計算機信息處理的主要特點有哪些？6. 試舉例說明計算機的應用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.